GEOLOGY AND PRODuc· ION HISTORY...GEOLOGY AND PRODuc· ION HISTORY of the Rosebank A~ea...

-- ~

GEOLOGY AND PRODuc· ION HISTORY of the

Rosebank A~ea

Southeastern Saskc tchewan

Including the fol lowing pools: lngoldsby robisher -Alida Beds, Silverton Frobisher Beds, Oakley f rob ii her Beds, Rosebank Alida Beds, Rosebank South Alida Beds Storthoaks Alida

Tilston Beds and Nottingham Alida Be :Is.

by

W. P. C. von Osinski

1971

DEPARTMENT Of MINERAL RE OURCES

Geological Sciences Bran h

Sedimentary Geology Divi ion

HON. G. R. (TED) BOWERMAN

Minister

G. WOTHERSPOON

Deputy Minister

PROVINCE Of SASKATCHEWAN

.... -- - -

GEOLOGY AND PRODUCTION HISTORY

OF THE

ROSEBANK AREA

SOUTHEASTERN SASKATCHEWAN

by

w. P. C. von Osinski

1971

DEPARTMENT OF MINERAL RESOURCES

Hon . G. R. Bo~er man Minister

GEOLOGICAL SCIENCES BRANCH

SEDIMENTARY GEOLOGY DIVI8ION

PROVINCE OF SASKATCHEWAN

J. G. Wotherspoon Deputy Minister

CONTENTS

I. Abstract

II. Acknowledgements

III. Introduction

IV . Stratigraphy and Lithology

General Overlying Beds Underlying Beds

V. Paleotopography

VI . Structure

VII. Productive Horizons

Tilston Beds Frobisher-Alida Beds Alida Beds Kisbey Sandstone Frobisher Beds

VIII. Production History

IX.

Figures

Ingoldsby Frobisher-Alida Beds Pc,ol Production data by years

Nottingham Alida Beds Pool Production data by years

Oakley Frobisher Beds Pool Production data by years

Rosebank Alida Beds Pool Production data by years

Rosebank South Alida Beds Pool Production data by years

Silverton Frobisher Beds Pool Production data by years

Storthoaks Alida-Tilston Beds Pool Production data by years

Bibliography

ILLUSTRATIONS

1 Index Map 2 Typical Electrical Log 3 North-South Cross Section 4 Map of Mississippian Erosion Surface 5 Mississippian Subcrop Map 6 Tilston Beds Structural Map

Page

1

2

3

4

4 6 6

7

9

10

10 11 11 12 13

15 17 18 20 21 22 23 25 26 27 28 29 30 31

32

No .

Page No .

3 4 5 8 9

10

- 1 -

ABSTRACT

The study area lies in southeastern Saskatchewan and is located

five miles west of the Manitoba border and twelve miles north of the U.S. -

Canadian border .

The regional dip is generally southwe.st into the Williston Basin .

Post-Mississippian, Pre-Jurassic erosion bevels all of the strata under

discussion with the oldest, the Tilston Beds, subcropping at the northern

limits of the study area and the Frobisher, the youngest, at the south. The

structure is monoclinal and demonstrates no unusual features .

The eroded surface of these Mississippian rocks exhibit character

istics of a mature landscape. The Mississippian strata are overlain un

conformably by the Mesozoic Watrous Formation.

Accumulations of petroleum occur in seven separate reservoirs

over the area, usually fairly close to the top of the eroded Mississippian

strata.

- 2 -

ACKNOWLEDGEMENTS

The author wishes to express his appreciation for the assistance

and co-operation of the members of the Saskatche,;.ian Department of Mineral

Resources during the preparation of this report.

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AREA OF STUDY •• -I FIGURE

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SCALE IN MILES

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- 3 -

INTRODUCTION

The area under examination lies in southeastern Saskatchewan

and includes all of Townships 3, 4 and 5, Ranges 31 and 32, west of the

Prime Meridian, plus some adjacent areas (Figure 1).

The reservoir rocks involved in this report all fall within

the upper portion of the Madison Group of Mississippian age (Figure 2).

The dip is to the southwest into the Williston Basin and the structure is

a simple monocline with no complicating features of any magnitude apparent.

Limestones constitute the greater part of the section with

dolomites and anhydrites occurring throughout. Subordinate amounts of

sandstones, siltstones and shales also occur.

The southwesterly dipping Mississippian beds were bevelled by

a long period of erosion and the contact with the overlying Mesozoic strata

is marked by an angular unconformity . The hiatus represents a period of

time possibly extending from Upper Mississippian to Jura-Triassic. The

eroded surface of the Mississippian carbonates ,=xhibits a mature topography

with a well dissected upland and generally wide valleys. The occurrence of

hydrocarbons in the several pools of the area i :s related to the morphology

of this eroded surface.

None of the rocks covered in this paper outcrop within the

study area nor within the province .

- 4 -

STRATIGRAPHY AND LITHOLOGY

General

All strata discussed in this report: occur within the upper

portion of the Madison Group of Mississippian age (Figure 2) , The lowest

beds considered are those of the Tilston which are Upper Kinderhookian in

age (Brindle, 1960, pp. 17-22). The Tilston Beds are the equivalent of the

MCl and MC2 (Mission Canyon 1 and 2) of Thomas (J.954), I n general, the

Tilston Beds are limestones which tend to be argi.llaceous or, in places,

dolomitic.

Above the Tilston Beds lie the Frobisher-Alida Beds which are

of lower Osage age (Brindle, ibid.). Within the study area the Frobisher

Alida Beds may be divided, in ascending order, as follows: Alida Beds,

Kisbey Sandstone and Frobisher Beds, Over much of southeastern Saskatchewan

it is difficult to divide the Frobisher-Alida Beds in this way as distinctive

markers are not persistent over any great distance, Within the study area

such a division is generally possible, though local l y some difficulty may be

encountered.

The Alida Beds are the equivalent of the MC3 of Thomas and they

rest conformably on the Tilston Beds . For the most part they are carbonates,

both limestones and dolomites, but sandstones and siltstones occur in minor

amounts . The latter are of limited areal extent.

The Kisbey Sandstone occurs immedicttely above the Alida Beds

and was termed the MC4 by Thomas. At a particulctr locality it may be a true

sandstone, a siltstone or an argillaceous limestone. In thickness the Kisbey

varies between 7 and 20 feet, and in this area, i.t is normally picked with

l ittle difficulty on mechanical logs or in cores.

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~ T.D. 3727'

Figure 2 TYPICAL ELECT RICAL LOG OF THE ROSEBANK AREA

- 5 -

The Frobisher Beds, the MCS of Thomas, lie on the Kisbey Sandstone.

Generally, the Frobisher Beds are limestones, s,ome of them dolomitic. In the

southwestern corner of the study area evaporite:s are abundant.

In the southwest of the area under ,~xamination the Midale Beds

(Figure 5) rest directly upon the Frobisher Bed:s. These are carbonates and

evaporites and have only limited ar ea l extent within the confines of this

paper. The Midale Beds are Osagean in age (Bri1ndle, ibid.). As they have

no economic importance in the area under discus1sion they will receive no

further mention.

Immediately below the contact of th,e eroded Mississippian carbon

ates and the Lower Watrous Formation the Missis:sippian strata are dolomitized

and contain much secondary anhydrite . The anhy,drite was deposited from

solution in the weathered zone and this infilli:ng, together with the shales

of the Lower Watrous Formation, forms the seal ·retaining the hydrocarbons

which have migrated into the positive topographic features of the erosion

surface.

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Figure 3

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NORTH-SOUTH CROSS -SECTI ON A-A' ( LINE Of SECTION ON FIGURES 4,S 011d 6)

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-...... T,O, -... -......

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- 6 -

OVERLYI NG BEDS

Overstepping the Mississippian strata are the red silty and

sandy shales of the Lower Watrous Formation. Th,e sandy and silty zones

are especially abundant toward the base of the f ,ormation. Minor evaporites

are present locally. The contact with the Mississippian carbunate s is

marked by an angular unconformity . This break r e presents an hiatus which

extended probably from late Mississippian time to the Jura -Triassic and

wa s likely a period of both erosion and non-de position .

Milner and Thomas (1954) placed the Lower Watrous in the

J urassic (possibly Triassic in part) . Francis ( 1956) placed his "Red Beds"

in the Jura-Triassic and indicated that they are the equivalent of the

Watrous of Milner and Thomas.

Francis (ibid.) suggests that the Lower Watrous Formation is

partly of continental origin and is of the opinion that one or more un

conformities exist though lithologic evidence is lacking. To date no

diagnostic fossils have been found .

UNDERLYING BEDS

Below the Tilston Beds lie those of the Souris Valley . These

are Kinder hookian in age (Brind l e, 1960-. p. 17) and form the lowest unit

of the Madison Group . They are argillaceous lirrtestones with some zones of

fossils and fossil debris. In t he study area the Souris Valley Beds become

incr easingly argillaceous as the contact with the Tilston Beds is approached.

I n t he a r ea under examina t ion, the Souris Va l ley Beds have not, as yet, pro

duced oil or gas . This may be attributed to the: fact that because they do

not subcrop in the area of s t udy t hey do not form positive topographic

features which a ppear t0 be invariab l y associated with the accumulation of

hydrocarbons in the area.

- 7 -

PALEOTOPOGRAPHY

The map of the eroded Mississippian surface (Figure 4) shows

an alignment of the topographic highs and intervening valleys from north

east to southwest. The most highly dissected areas of the lands studied are

to the north and along the eastern side (Figure 4). Within these portions

of the study area are concentrated the producing oil pools.

The shallowest point observed on the eroded surface is found

in the F .H. Calstan Nottingham well (Lsd 8-21-5·-31 Wl) where the erosion

surface was cut at 3311 feet below K.B. (1500 foet sub-sea). The deepest

point noted was in the Homestead et al. CarndufJE dry hole (Lsd 12-2-3-33 Wl)

where the erosion surface is at 3929 feet below K.B. (2165 feet sub - sea).

In the northwest corner of the study area the Nottingham Alida

Beds Pool is shown on the erosion surface map as coincident with an elongated,

southwest-trending ridge which expands at its southern end to a broad hill

separated from the body of the ridge by a low saddle. This latter positive

feature is associated with the Oakley Frobisher Beds Pool.

Parallel to the Nottingham ridge and to the southeast of it is

another elongated topographic high which coincides with the Rosebank Alida

Beds Pool. It is separated from the Nottingham ridge by a broad valley

which narrows and steepens at the southern end between the Rosebank and

Oakley Pools.

To the east of the north end of Rosebank Alida Beds Pool is the

Storthoaks Alida-Tilston Beds Pool, which is located on another southwest

trending ridge parallel to the topographic high associated with Rosebank.

This ridge terminates at the southeastern end ojf the pool in a shallow

saddle or col beyond which the feature is continued. This continuation

coincides with the Rosebank South Alida Beds Pool.

R 33

Abandoned dry hole---- --- - --- --"

Oil well ············---------- - • Abondontd oil well ·-··-·-- - - - - ;

Water lnJection w.11···· - - ----- t

Pool boundorl n .......... ------- - -

Con1o!kr ln1ttvo1 Is 25 fee I

AH VOIUH sub HO

R 32 R 31

Figure 4

CONTOUR MAP on top of the

MISSISSIPPIAN EROSION SURFACE ROSEBANK AREA

SOUTHEASTERN SASKATCHEWAN SCALE IN MILES

~"""'°" .iwi- lflt~· if'l;OfltQOltub· dY1S\Ol'IS

R 30

II ao 1.1 u u t•

II If lit i $

... OM '"flt""~ (r td.lod) Sl!0.1"0 1111 ..... 1"9 °' M(.1~S

- 8 -

East and south of the Rosebank South Alida Beds Pool is the

Ingoldsby Frobisher-Alida Beds Pool which occupies the site of a broad

hill of considerable area with a south-plunging spur at the southeastern

edge.

On the west side of the study area, west of Ingoldsby and at

the termination of the Rosebaak South-Storthoaks topographic feature, is

the Silverton Frobisher Beds Pool. This pool is marked by a small oval

hill. The pool is small and is now close to depletion. In topographic

relief it is the least prominent of all of the pools in the area and its

oil production is less than the others.

The close relationship of the well-dissected erosion surface

with oil production bears out Fuzesy's views on the Frobisher-Alida Beds

(Fuzesy, 1966, pp. 43-44): "Oil accumulated int the areas where reservoir

rocks are associated with topographic highs, these two factors determining

the position of cormnercial oil accumulations".

, NOTTINGHAY 4L IDA : BEDS POOL

R 33 R 3 1

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TIUfTON BEDS

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R 33

Abandon•d dry hole •• •• •• • ............ #

Oil well-- · -··-················ • Abandoned oil well ·········-·· ;

Water Injection well ·-·--- - ---· t

Pool boundories · ··········--- -

L-~----~----J I STOATHOAKS Al.10A -TI L$TON .--+---I ~ 8lOS POOL

-.-·r FROBISHER

HASTI NGS (\IAFOftl ft

R 32 R 31

Figure 5

MISSISSIPPIAN SUBCR:OP MAP {AFTER L M. FUZESYl

of the

ROSEBANK AREA

SOUTHEASTERN SASKATCHEWAN SCALE IN MI LES

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- 9 -

STRUCTURE

Within the study area the combination of dipping strata and the

bevelling effect of the erosion surface makes it impossible to select a

single mapping horizon to demonstrate the structure of the entire area , I n

addition, many of the wells do not penetrate the Mississippian strata deep l y

enough to reach any such horizon .

A structural map (Figure 6) has been drawn on the top of the

Tilston Beds which does give a map over most of the area . The part of the

area where the Tilston Beds subcrop (and hence where this top is missing)

is of small extent and comparatively few wells have been drilled there .

On Figure 6 the dip of the strata is shown to be to the south

west with the strike running from southeast to northwest. The dip averages

between 50 and 75 feet per mile ,

There is little in the way of local. structural features other

than the gentle nosing which is associated with some of t he oil pools.

This nosing , however, may be related to the minor folding of the Frobisher

Alida Beds noted by Fuzesy (1966, pp. 44) . In this paper Fuzesy indicates

that t his folding often coincides with the positive topographic features

of the erosion surface in several of the oil p~oducing areas of southeaster n

Saskatchewan. I n the lower portion of the Frolbisher-Alida beds trapping of the

hydrocarbons is related to the topographic highs and is largely structural

stratigraphic . In the upper part of the Frobisher Beds, outside the present

area, the relation of topography to oil accumulation is not close and the

trapping is largely controlled by variations in porosity and permeability of

the rocks (Fuzesy, ibid .).

R 33

,, -·~---' I ' ~:.~ ~-1-...,,'4~-"".,__

I I I t •

L· r--: . . . .. .,.

R 33

Abandoned dry hot. ...................... 11

Oil well ... ............................. •

AbondoMd oil well ................. ,

Water Injection well·· ········- t

Pool boundorlu----- ------·--

Ero,ionol tdQe of Alida Btds i.-.1..

Contour interval is 25feet

All vofuu sub uo

R 32

Figure 6

STRUCTURE MAP on top of the

TILSTON BEDS ROSEBANK AREA

SOUTHEASTERN SASKATCHEWAN SCALE IN MILES

R 31

R 31

OM Wchot1 "'""ol\91'1ffll>tt' '" lfl4 ot lt90I WI• ,1.lt\Ofll

R 30

R 30

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t •

ON ,o.,flJl!1p (f1d1104> t!Mwt,ll!t.W.mbttwi9ofw-c,M>n1

- 10 -

PRODUCTIVE HORIZONS

Tilston Beds

The lowest productive rocks in the area under consideration

are those of the Tilston Beds. They average about 150 feet in thickness,

though this varies in different localities . The Tilston Beds are the

equivalent of Thomas's (1954) MCl and MC2. The lower part of these beds,

the MCl, is usually about 135 feet in thickness while the upper, or MC2,

portion is normally 10 to 15 feet thick .

The Tilston Beds were named by the Saskatchewan Geological

Society (Saskatchewan Geological Society, 1956) from beds at this strati

graphic level in the Tilston Oil Field in Manitoba .

The sediments are carbonates, usually fine grained. They may

be limestones or partially or completely dolomitized limestones . They

often contain oolites, crinoidal fragments and fine silty material. The

thinner upper part, the MC2, is usually silty and argillaceous and may be

dolomitic.

I n the study area Tilston Beds production is restricted to the

subcrop or areas immediately adjacent to the subcrop. It appears that the

trapping of Tilston Beds and Alida Beds oil is dependent on positive topo

graphic features on the erosion surface.

Tilston production in this area is confined to the Storthoaks

Al ida-Tilston Beds Pool where the Tilston Beds produce in the northeast

end of the pool, and the Nottingham Alida Beds Pool, where a few wells

produce Tilston oil in the northeast portion of the pool.

- 11 -

Frobisher-Alida Beds

In 1956 the Saskatchewan Geological Society (Saskatchewan

Geological Society, 1956) named the strata occurring between the top of the

Tilston Beds and the base of the Midale Beds, the Frobisher-Alida Beds,

The designation comes from those correlative beds found in the Frobisher

and Alida oil fields in Saskatchewan. They did niot subdivide the Frobisher

Alida Beds as no suitable dividing horizons were found that were regionally

persistent.

Within the study area the Frobisher-Alida Beds may usually be

divided in the following manner from oldes t to youngest (Figure 2): Alida

Beds (MC3), Kisbey Sandstone (MC4), and Frobisher Beds (MC5). This sub

division follows Fuzesy's (1960) comparison with Thomas's work of 1954

(Figure 2),

Alida Beds

The Alida Beds lie between t he Tilston Beds and the Kisbey

Sandstone. Brindle (1960, p. 25) indicates Osagean age for the Frobisher

Alida Beds.

The Alida beds vary from 150 to 200 feet in thickness. The

rocks are typically crinoidal limestones, fine to coars~ly sucrosic dolo

mitized limestones, fossiliferous limestones, ca]lcilutitic limestones and

sandstones and siltstones of limited areal extent. The beds may be oolitic

and pisolitic, though this is not common. Where porous the Alida beds

usually have intercrystalline or intergranular porosity.

Petroleum is produced from these beds in the Ingoldsby Frobisher

Alida Beds Pool, in the Rosebank Alida, Rosebank South Alida, Nottingham

Alida and Storthoaks Alida-Tilston Beds Pools.

- 12 -

The entrapment of hydrocarbons is dependent on positive topo

graphic relief and reservoir rock occurring together.

Kisbey Sandstone

The Kisbey Sandstone lies above the Alida Beds and directly

beneath the Frobisher Beds, and is the MC4 of Thomas (Thomas, ibid .). The

subcrop of this sandstone roughly divides the study area in half from south

east to northwest (Figure 5) . Edie (1958) notedl an upper a.nd a lower sand

at this point in the section. Fuzesy (1960) used the upper sand as the true

Kisbey Sandstone a s it is more constant and regi.onally identifiable . Other

sandy and silty zones occur in both the Frobisher and the Alida Beds but

their areal extent is limited .

In thickness the Kisbey Sandstone varies between approximately

7 and 20 feet. It is principally composed of quartz, feldspar and chert,

and is usually medium grained and well sorted. Within the study area at

different localities the Kisbey is a true sandst:one, a siltstone and an

argillaceous limestone. Where the overlying Frobisher beds approach the

erosion surface infilling may change the character of the curves of mechani

cal well logs. This, with the occurrence of st1ray sandstones and shales in the

section can make identification difficult .

The colour of the sandstone may be grey, brown or red. In places

it is current bedded and ripple marked indicating high energy and/or shallow

water deposition.

The Kisbey Sandstone produces oil in the Ingoldsby Frobisher-

Al ida Beds Pool but it is included in the Frobi:sher -Alida Beds which are

consider ed a single reservoir by the Saskatchew,an Department of Mineral

Resources.

- 13 -

Frobisher Beds

The Frobisher Beds are the youngest Mississippian strata re

maining over most of the study area , The Mida1le Beds of the southwest

are younger than the Frobisher but are not included in this report .

The Frobisher Beds conformably ove:rlie the Kisbey Sandstone

and are, in turn, overlain unconformably by the J ura-Triassic Lower

Watrous Formation in the study area. The Frobisher Beds average 170 feet

in thickness . They are mostly carbonates with algal, oolitic and piso

litic limestones occurring most frequently . T'hese limestones normal ly

have very fine crystalline matrices . There are also, in lesser amounts,

fine fragmental limestones, fossiliferous limeistones, argillaceous and

silty dolomitized limestones and lenses of sandstone and sil t stone.

Vuggy porosity is typical of the Frobisher Beds .

In the lower Frobisher Beds t he oc:currence of oil is governed

by the structural-stratigraphic conditions, as in the Al ida Beds . The

presence of oil in the upper Frobisher Beds depends on stratigraphic

conditions rather than structure. Within the s t udy area Frobisher produc

tion is confined to the lower portion of these beds.

I n the southwest of the area of study the Hastings Evaporite

occurs in t he upper part of the Frobisher Beds ( Figure 5) . Generally this

evaporite is found 10 to 12 feet below the top of the Frobisher Beds and

is overlain by non-evaporites, normally argil l aceous and silty limestones

and dolomites .

The Hastings evaporite varies in thickness from 35 to 102 feet.

As it nears its northern depositional limit it undergoes a lateral facies

change to carbonates. This change progresses upward from the base and at

the depositional limit the remaining evaporite is the equival ent of the

upper Hastings as it occurs in a full section.

- 14 -

The Frobisher Beds are productive in the lngoldsby Frobisher

Alida Beds Pool, the Oakley Frobisher Beds Pool and the Silverton Frobisher

Beds Pool.

- 15 -

PRODUCTION HISTORY

Ingoldsby Frobisher-Alida Beds Pool

GENERAL

Wells capable of Production

Number of Producing Wells

Average Production/Well

Year Discovered .. ...... ........ ...... ...... Discovery Well - Imperial Ingoldsby .•.•••.••

Spacing ........ ........... .

70

67

45 B/D

1955

3-21-4-31 Wl 80 acres

RESERVOIR CHARACTERISTICS

Reservoir Energy Source .......... ... ...... Secondary Recovery ........ ............ ... .. Oil Gravity ... ... .......... ... ....... .... Average Feet Net Pay

Unit ............................. . Non-Unit .... .. ....... ....... .. ...... ..

Average Porosity Unit ..... .. . . . . ..... ... . ... .. . .. . . Non-Unit ................... .......... .

Water Saturation

Water Drive

None

30° API

28 . 5 21.4

13'7o

Unit •• •..•.•.•••.. • • .••.• •• • • •• . • • 30% Non-Unit ....... ....... ... .......... ...

Original Oil in Place STB/Acre Ft. Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 611 Non-Unit

Area Acres Unit Non-Unit

.................... ... ... ....

........ ... .. ..... .. .. ... .. ...

.............................. Original Oil in Place STB

Unit ............ . ...... ..... ..... . Non-Unit ..................... • ........ .

Estimated Primary Recovery Unit ............................ . Non-Unit .... ...... . .... ... ...... ... . .

3000 2960

52,240,000 38,703,000

35% 30%

- 16 -

Reservoir Characteristics - continued

Original Primary Reserves STB Unit . . . .......................... . Non-Unit

PRODUCTION

Cumulative Production Dec. 31, 1969 Unit .•...... .. ...... .... . .... ..... Non-Unit

Remaining Reserves Unit ......... .......... .......... . Non-Unit

Trap Type: Structural Stratigraphic

18,284,000 11,611,000

8,261,000 5,733,000

10,023,000 5,878,000

- 17 -

INGOLDSBY FROBISHER-ALIDA BEDS POOL

Production Data by Years

Year Bbl. Oi 1 MCF Gas Bbl. Water Av. GOR Av. WOR

1955 15, 013 3, 736 4,806 186 .651

1956 305,265 63,987 61, 715 228 . 176

1957 619,547 121,979 245,934 199 . 389

1958 838,925 127,953 533,054 155 .660

1959 886,168 126,085 679,918 143 .770

1960 928,093 133, 696 890,528 144 .970

1961 949,152 150,681 988,425 158 1.040

1962 967,513 141,334 1,301,819 146 1.346

1963 994,073 148,090 1,326,351 149 1.337

1964 1,054,361 155,267 1,521,607 147 1.444

1965 993, 712 143, 968 1,764,549 145 1. 777

1966 1,097,705 149,631 1,769,059 139 1 . 685

1967 1,702,474 191,521 1,984,983 113 1.666

1968 1,501,905 193,745 2 ,231 ,,371 130 1.495

1969 1,141,376 193,634 2 ,233,,351 171 1.962

13, 995 ,282 2,045,307 17 ,537 ,.470 Cumulative production

- 18 -

PRODUCTION HISTORY

Nottingham Alida Beds Pool

GENERAL




Year Discovered

Discovery Well - MOWS Nottingham ...••.•••.••••. Spacing ...... . . . ............ . .


Reservoir Energy Source

Secondary Recovery

Oil Gravity ................... ....... ....... .. Average Feet Net Pay

Unit .. ... ....... .. .. . . . ... . . . ...... . .. . Non -Unit ....•.. . .. . ....... . .... . ...... . .. . .

Average Porosity Unit .. . .............. . ... . ....... . .... . Non - Unit . ... •. .. .. . ... . ... •. . . ... .. .•..• . ..

Water Saturation Unit .... .. . . ...... . ...... . ............ . Non -Unit ......... . ... . .. ... .. . . .. .... . .... .

Original Oil in Place STB/Acre Ft. Unit . .... . ........... . ... . .. . ... ... ... . Non-Unit


.. .... ...... .......... ... ... .. .. ...

.. .. ....... ..... ...... .... .... ... .. Original Oil in Place STB

Unit . . ................. . ..... . .. . . . . .. . Non-Unit

Estimated Primary Recovery Unit .... . ... . .... . . . . . ............. .. . . Non-Unit .... .. . . . . ... . . . ... . ....... .. . . . . . .

70

42

36 B/D

1956

8-30-5-32 Wl 80 acres

Water Drive

None

37° API

30 21.3

16 . 9% 15.5%

31.2%

676 620

2920 1920

59,218,000 25,356,000

15% 23%

- 19 -


Original Primary Reserves Unit ............................... . Non-Unit

PRODUCTION

Cumulative Production Dec. 31, 1969 Unit ...... . ........................ . Non-Unit

Remaining Reserves STB Unit Non-Unit

Trap Type: Struc:tural Stratigraphic

8,883,000 5,832,000

5,587,000 3,022,000

3 ,296 ,000 2,810,000

- 20 -

NOTTINGHAM ALIDA BEDS POOL

Production Data by Year

Year Bbl. Oil MCF Gas Bbl. Water ·Av. GOR Av. WOR

1956 139,768 93,676 7,050 323 .017

1957 541,072 449,276 183,359 832 .338

1958 464,029 387,198 312 ,200 836 .678

1959 476,206 443,428 379,513 936 .805

1960 568,523 531,706 497 ,565 934 .878

1961 772 ,893 764,019 551,8l~O 789 .719

1962 953,212 939,216 630,0:72 986 . 662

1963 794,870 773 ,298 684,802 975 .851

1964 766,018 612, 322 1, 011, 887 745 1.324

1965 704,524 563,907 1,01~,839 799 1.434

1966 668,364 554,440 1,089,271 831 1.631

1967 630,867 491,872 1,275,592 780 2.030

1968 591,312 464,742 1,399,071 785 2 .372

1969 536,786 410,723 1,577,191 765 2.934

13,995,282 2,045,307 17 ,537 ,470 Cumulative production

- 21 -

PRODUCTION HISTORY

Oakley Frobisher Beds Pool

GENERAL




Year Discovered ........................... Discovery Well - Imperial Hastings ••••.•••.••

Spacing .•.•••••••••••••••••



Secondary Recovery

Oil Gravity ............................... Average Feet Net Pay

Average Porosity

Water Saturation

Original Oil in Place STB/Acre Ft.

Area Acres ............................... Original Oil in Place STB ................... Estimated Primary Recovery •••••••••••••••• ff ••

Original Primary Reserves STB

PRODUCTION

Cumulative Prod. Dec. 31, 1969 STB

Remaining Reserves STB ......................

5

5

8 B/D

1955

1-35-4-33 Wl 80 acres

Water Drive

None

39° API

31.3

9.2%

. 40%

321

640

6,430,000

8%

514,000

462,000

52,000


- 22 -

OAKLEY FROBISHER BEDS POOL


Year Bbl. Oil MCF Gas Bbl. Water Av. GOR Av. WOR

1955 15 ,811 13,835 256 813 .047

1956 81,256 88 ,485 ' 40,802 1115 .488

1957 54,325 53,484 59 ,5'96 1029 1.056

1958 41,042 41,617 ~9,416 1036 2.045

1959 37,511 38,029 100, l '.56 1016 2 .655

1960 35,875 34,047 133,7.58 948 3.754

1961 29,801 22,582 139,038 757 4.667

1962 28,737 22,374 122,847 829 4 .275

1963 23 ,415 16,748 114, 994 719 4.925

1964 25,468 165,438 133,438 654 5.254

1965 21, 769 19, 967 136, 129 946 6.222

1966 18,826 23,679 136,379 1292 7 .319

1967 15,560 14,836 133,018 895 8.370

1968 18,392 18,644 165 ,453 1038 9.019

1969 14,106 14 ,521 128,706 1073 9.318

461 ,894 439,391 1,633 '9186 Cumulative production

GENERAL

- 23

fRODUCTION HISTORY

Rosebank Alida Beds Pool




Year Discovered

Discovery Well - MUS Rosebank Spacing



Secondary Recovery

Oil Gravity .......... .. ........ .... .... ..... Average Feet Net Pay

Unit . . .. .... . .. .. ....... ....... ... ... . Non-Unit ... ............... .. ·• ........... .

Average Porosity Unit .... ..... . .. . . ...... .. •. .. .... ... .

Non-Unit .•...... . ... .. ••••• •i••··· · ······· Water Saturation

Unit .. . . ... . . . . . . . . . . . . . .• . . . . . . . . . . . . Non-Unit .......... ........ ......... ......

Original Oil in Place STB/Acre Ft. Unit ........... ....... . . .... . ........ . Non-Unit


....................... ... ....... .

..... ..... .... ...... ... .... .......

....... ....... ................... Original Oil in Place STB

Unit ........... .. ....... 1• • • • • • • ••• •• • Non-Unit ... .... .. ...... ..... ... ...........

Estimated Primary Recovery Unit ......... .... ....... .... .. . . .. ... . Non-Unit ................................ .

58

53

66 B/D

1955

10-10-5-32 Wl 80 acres

Water Drive

None

37° AP!

61. 7 38.7

. 12. 610 15 .0%

37.5%

467 556

720 3520

20,746,000 75,741,000

40% 20%

- 24 -


Original Primary Reserves Unit .... ...... ........... ......... .... . Non-Unit ......... . ............. .......... .

PRODUCTION

Cumulative Production Dec. 31, 1969 Unit .................................. . Non - Unit ................................. .

Remaining Reserves STB Unit ... .............. ...•.... .......... Non-Unit ..................................


8,298,000 15, 148 ,000

6,051,000 9,040,000

2,247,000 6,108,000

- 25 -

ROSEBANK ALIDA BEDS POOL



1955 230,152 140,525 5 ,203 673 .016

1956 889,656 439 ,286 86,~!78 491 .092

1957 1, 127 ,569 648 ,692 226,:759 577 .204

1958 1,132,733 592,553 361, 162 572 .318

1959 1,087,460 605, 712 482,939 558 .444

1960 1,053,353 567,808 519,192 540 .497

1961 1,011,546 546,903 598, 765 541 .593

1962 991,706 560,219 733,568 564 .740

1963 906, 120 531,106 794,057 586 .885

1964 972 ,540 583,292 886,378 600 .911

1965 955,886 558,407 1,007,507 636 1.056

1966 946,283 605,532 1,323, 723 639 1.396

1967 1, 164 ,218 779, 982 1, 925 /583 670 1.643

1968 1,373,170 983, 725 2,456,:221 716 1. 789

1969 1,248,812 945,031 2,554,I063 757 2.045

15 ,091,204 9 ,088, 773 13,961,398 Cumulative production

- 26 -

PRODUCTION HISTORY

Rosebank South Alida Beds Pool

GENERAL


Number of Producing Wells ................ Average Production/Well

Year Discovered ........................... Discovery Well - Imperial Rosebank •••••••• • .•

Spacing ...... . . •1 • ••• • •••• ••


Reservoir Energy Source •• •• •• • • 0 •••••••••••

Secondary Recovery •••••••• 0 ••• •••••• • •

Oil Gravity ..... .. . ,, ........ .. . Average Feet Net Pay •••• • ••• 1• • • ••• ••• •••

Average Porosity ................ .... Water Saturation ..... ............... Original Oil in Place STB/Acre Ft. .. ........ Area Acres ....... ............. Original Oil in Place STB .................... Estimated Primary Recovery ••.•• • •. • ••.••.••.•

Original Primary Reserves STB •• •• •.• ••• •.••..

PRODUCTION

Cumulative Production Dec. 31, 1969 STB •••••.

Remaining Reserves STB ..... .. ... ..... .. ..

5

5

22 B/D

1954

9-26-4-32 Wl 80 acres

Water Drive

None

34° API

25

9.8%

35%

390

680

6 , 630,000

10%

663,000

327,000

336,000


- 27 -

ROSEBANK SOUTH ALIDA BEDS POOL


Year Bbl. Oil ,MCF Gas Bbl. Water Av. GOR Av. WOR

1954 66 10 0 152 .000

1955 19,904 3 ,341 14,461 131 1.049

1956 31,158 4,906 22,849 152 • 726

1957 21,236 2,975 17,888 141 .848

1958 15,591 2 ,428 18,420 156 1.179

1959 10, 826 1, 127 21,338 102 1.971

1960 8,592 966 21,966 113 2.574

1961 8,574 349 21,738 109 2.583

1962 9,342 0 28,387 0 3.809

1963 10, 6 77 699 49,190 99 4.616

1964 10,086 1,338 41,711 135 . 4.971

1965 24,014 2,389 42,738 109 2.338

1966 23 ,284 1,876 36,993 81 1.589

1967 39,705 5,020 37, 973 116 1.049

1968 53,981 7,450 43 ,217 136 .809

1969 39,946 6, 118 46, 115 153 1.157

326,982 28,756 464, 984 Cumulative production

- 28 -

PRODUCTION HISTORY

Silverton Frobisher Beds Pool

GENERAL




Year Discovered

Discovery Well - Husky MMCS Silverton •••••••• Spacing ..................... .



Secondary Recovery

Oil Gravity

Average Feet Net Pay

Average Porosity

Water Saturation

Original Oil in Place STB/Acre Ft.

Area Acres

Original Oil in Place STB

Estimated Primary Recovery

Original Primary Reserves STB ••••. .••••.••• •.• •

PRODUCTION

Cumulative Production Dec. 31, 1969 STB •••••.•

Remaining Reserves STB

1

1

20 B/D

1956

16-30-3-32 Wl 80 acres

Water Drive

None

34° API

26 .2

384

320

3,219,000

12%

386,000

359,000

27,000


- 29 -

SILVERTON FROBISHER BEDS POOL


Year Bbl. Oil tiCF Gas Bbl. Water Av. GOR Av. WOR

1956 11, 791 4, 782 1,617 380 .150

1957 43,969 18,468 27,598 209 .679

1958 39,421 14,107 32,936 357 .821

1959 30,079 8,851 24,957 295 .802

1960 40,503 10,893 36,210 274 .907

1961 39,575 9 ,851 36,996 258 .936

1962 34 ,023 11, 711 31,929 343 .941

1963 31,477 8,248 16,475 259 .191

1964 25,607 7 ,462 16,059 298 .630

1965 19,648 5,104 14, 116 259 • 721

1966 16,306 4,663 11,889 286 • 713

1967 10,301 2 ,671 2,403 254 .209

1968 7, 725 1, 716 372 222 .048

1969 7,351 1,634 461 222 .063

357, 776 110,161 254,018 Cumulative production

- 30 -

PRODUCTION HISTORY

Storthoaks Alida-Tilston Beds Pool

GENERAL




Year Discovered

Discovery Well - Grizzly BTO Calstan Storthoaks , Spacing ......•................



Secondary Recovery

Oil Gravity ••••• 0 ••••••••••••••

Average Feet Net Pay ••••• !t ••••••••••••••

Average Porosity

Water Saturation

Original Oil in Place STB/Acre Ft,

Area Acres ..... ................ Original Oil in Place STB

Estimated Primary Recovery .................... Original Primary Reserves STB

PRODUCTION

Cumulative Production Dec, 31, 1969 STB

Remaining Reserves STB ................... .

14

13

41 B/D

1962

12-23-5-31 Wl 80 acres

Water Drive

None

31° API

18.6

14 ,2'70

35 ,01o

637

1320

15, 640 ,000

25%

3,910,000

1,881,000

2,029,000


- 31 -

STORTHOAKS ALI DA-TILSTON BEDS POOL



1962 60,414 24,882 35,894 296 .858

1963 179,389 85,468 56,685 449 .353

1964 335,603 215,419 100, 821 641 . 295

1965 320, 731 166,075 156,526 612 .472

1966 293 ,504 182,044 178,177 619 . 604

1967 257,787 174 ,648 149,941 678 .581

1968 233,636 162,881 149, 784 699 .642

1969 199,626 147,226 161,617 739 .811

1,880,690 1, 158, 643 689,445 Cumul ative production

- 32 -

BIBLIOGRAPHY

BISHOP, R. A, - 1954 - Saskatche-wan Exploratory Progress and Problems, Western Canada Sedimentary Basin . Bull. Amer . Assoc. Petrol. Geol., pp . 475-485.

BRI NDLE, J.E. - 1960 - Miss issippian Megafaunas in southeastern Saskatche-wan, Saskatchewan Department of Mineral Resources, Report No. 45 .

EDIE, R. W. - 1958 - Mississippian Sedimentation and Oil Fields in southeastern Saskatche-wan. Bull. Amer , Assoc. P,etrol. Geol. Vol . 42, pp . 94 -126.

FRANCIS, D.R. - 1956 - Jurassic Stratigraphy of the Williston Basin, Saskatche-wan Department of Mineral Resources, Report No. 18 .

FULLER, J . G. C. M. - 1956 - Mississippian Rocks and Oil Fie lds in southeastern Saska tche-wan, Saskatchewan Department of Minera l Resources, Report No. 19.

FUZESY, L . M. - 1960 - Correlation and Subcrops of the Mississippian Strata in southeastern and south central Saskatche-wan, Saskatchewan Department of Mineral Resources, Report No. 51.

- 1966 - Geology of the Frobisher-Alida Beds, southeastern Saskatchewan, Saskatche-wan Department of Mineral Resources, Report No . 104.

HUTT, R. B. - 1963 - East-West Cross Section Saskatchewan, Saskatchewan Department of Mineral Resources.

McCABE, H. R. - 1959 - Mississippian Stratigraphy of Manitoba, Manitoba Department of Mines and Natural Resources, Mines Branch. Publication 58-1 .

MARTIN, R. - 1964 - Buried Hills Hold Key to New Mississippian Pay in Canada, The Oil and Gas Journal, Vol. 62, No . 42, pp. 158-162.

MILNER, R. L . and THOMAS, G. E. - 1954 - Jurassic System in Saskatchewan, Western Canada Sedimentary Basin . Alffier . Assoc. Petrol . Geol . , Tulsa, Oklahoma .

SASKATCHEWAN DEPARTMENT OF MINERAL RESOURCES, 1969 - Reservoir Annual 1969, Department of Mineral Resources, Saskatchewan.

1969 - Reservoir Performance Charts, Dec . 31, 1969, Department of Mineral Resources, Saskatchewan.

SASKATCHEWAN GEOLOGI CAL SOCIETY, 1956 - Report of the Mississippian Names and Correlations Committee, Regina.

THOMAS, G. E. - 1954 - The Mississippian of the northeastern Williston Basin. Can. I nst . Min . Met . Trans. Vol. 57, pp. 68-74. (Bull . 503, pp . 136-142).

I

GEOLOGY AND PRODuc· ION HISTORY...GEOLOGY AND PRODuc· ION HISTORY of the Rosebank A~ea...

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