Standard Oil Co.

T. 4 S.. R. 13 W., S.B.B. & M.

Rancho San Pedro.

Dominguez Well No 1, abandon. P 1-148.

The proposed method of abandonment was approved.

Highland Development Co.

Dominguez Well No. 1, supplementary to continue drilling. P1-92.

The physical condition of the well caused the 61′′ casing to be landed without cementing. Approved proposal to continue drilling, with the understanding that. in case oil-bearing formations were encountered, water will be shut off above them. Dominguez Well No. 1, plug bottom and recement. P 1-200.

Approved the proposal of the company to perform certain shooting and plugging operations in order to test out a possible gas-bearing formation.

General Petroleum Corporation.

Carson Well No. 1, abandon. P 1-95.

Approved the proposal of the company to pull as much casing as possible and abandon. No plugging was required.

Bartolo Oil Co.

T. 2 S., R. 14 W., S.B.B. & M.

Well No. 1, abandon. P 1-213.

SECTION 20.
Inglewood Field.

Approved proposal to abandon. Certain shooting and plugging operations were recommended.

Well No. 1, test cement plug. T 1-122.

Tests as witnessed with information furnished by the company, indicated that a cement plug was placed against the walls of the well from a point 10' below the shoe of the 8" casing up 35′ into the 81" casing, which fulfilled the requirements of the department as to plugging at that point.

Well No. 1, test cement plug. T 1-126.

Test as witnessed, with information furnished by the company, showed that the well was shot and cleaned out as recommended, but that the cement placed in the well did not remain in the position intended.

Well No. 1, supplementary to abandon. P1-242.

Approved proposal to shoot and plug as outlined.

Well No. 1, test cement plug. T 1-132.

Test as witnessed, with information furnished by the company, showed that a cement plug was placed in the well between depths of 2725′ and 2750′, as recommended.

Well No. 1, test cement plug. T 1-139.

Test as witnessed, with information furnished by the company, indicated that a cement plug was placed in the well between depths of 2040′ and 2060′, as recommended. This work completed the required plugging of the well.

T. 1 S., R. 12 W., S.B.B. & M.

Jordan Crude Oil Co.

SECTION 19.

Well No. 1, commence drilling. P 1-83.

Approved proposal to drill, and recommended that the company cement each string of casing, except the oil string.

Well No. 1, shut off. T1-164.

Test of water shut-off unsatisfactory. Approved proposal to recement

Amalgamated Oil Co.

T. 1 S., R. 13 W., S.B.B. & M.
SECTION 25.

Huntington Well No. 1, drill. P1-15.

Approved proposal relative to depth at which 124" and 10" casings should be cemented.

Recommended that the company drill the well in the manner proposed, furnishing this department further information in case it became necessary to cement a second water string.

Well No. 2, supplementary to drill. P1-140.

Approved proposal of the company to shut off water at a shallower depth than originally proposed in order that an oil sand near the surface could be tested for productiveness.

Well No. 2, shut off. T 1-70.

Water not shut off. A large amount of water had entered the well while standing for test. Source undetermined. Recommended bridging the bottom of the well and conducting further tests to determine, if possible, the source of the water. Well No. 2, supplementary to drill. P 1-165.

test.

Approved proposal of the company to clean out the well and make a pumping It was noted that oil-bearing formations, being tested for productiveness in this well, were not reported in the original log of well No. 1, adjoining, and were cased off without being tested in Well No. 1.

Well No. 2, supplementary to deepen. P 1-1000.

After exhaustive tests of the top oil zone, which tests proved that the zone was not commercially productive, approval was given to deepen the well and test out the oil zone from which well No. 1 was producing.

Well No. 2, shut off. T 1-1003.

Water shut off with 10′′ casing. Test approved.

SECTION 7.

Standard Oil Co.

Well No. 22, Elsmere, commence drilling, P 1-17.

Approved proposed depth of water shut off.

Well No. 22, Elsmere, shut off. T 1-16.

Test showed water shut off and was approved as satisfactory.

Well No. 22, Elsmere, alter casing. P 1-116.

Method of redrilling to exclude, if possible, water which was being produced with the oil was approved.

Well No. 22, Elsmere, shut off. T 1-77.

Results of this test, together with tests conducted by the company and not witnessed by a representative from this department, indicate that several attempts to plug the bottom of the well after cementing the 81" casing, failed to shut the water off or demonstrate its source. Recommended further bailing tests and requested notice of proposed new work.

Well No. 22, Elsmere, abandon. P 1-184.

Recommended certain work in plugging and abandoning the well.

Buick Oil Co.

SECTION 18.

Well No. 1, commence drilling. P 1-209.

Depth of water shut could not be determined in advance. Recommended that water be shut off, however, above any oil-bearing formations encountered in order that the productiveness of the formations might be determined.

Well No. 1, shut off. T 1-1000.

Water not shut off. Approved proposal to drive the casing in an attempt to exclude all water.

Well No. 1, redrill. P 1-1001.

Method of redrilling to sidetrack lost shoe joint to effect water shut-off was approved.

Well No. 1, shut off. T 1-1002.

Water shut off. Test approved as satisfactory.

Well No. 1, redrill. P 1-1005.

Approved proposal to redrill and shut off water at a lower depth in order to test out oil-bearing formations encountered below the proposed depth of shut-off. T. 3 N.. R. 16 W., S.B.B. & M.

E. A. & D. L. Clampitt.

SECTION 12.

Well No. 11, commence drilling. P1-35.

Approved depth of water shut-off as proposed.

Well No. 12, commence drilling. P1-149.

Proposed depth of shut-off was approved, providing oil formations were not encountered above the proposed depth.

E. A. Clampitt.

SECTION 13.

Well No. 3. abandon. P 1-37.

Recommended that the well be shot and plugged with cement in certain shale bodies during abandonment.

Standard Oil Co.

SECTION 16.

Well No. 6, Wiley, alter casing. P1-226.

Approved proposal of the company to remove certain casing.

Well No. 14. Wiley, alter casing. P1-227.

The proposal of the company to alter casing was approved.

Well No. 14, Wiley, alter casing. P. 1-228.

Approved company's proposal to remove portion of the casing with certain modifications.

Well No. 16, Wiley, alter casing. P 1-229.

The proposal to remove certain casing as outlined was approved.

Well No. 18. Wiley, alter casing. P 1-230.

Approved proposal to remove a portion of the casing.

Well No. 18. Wiley, redrill. P1-1003.

Approved method of redrilling outlined by the company.

Well No. 18, Wiley, supplementary redrill. P 1-1006.

Due to changed conditions the supplementary proposal to redrill was approved. Well No. 26. Wiley, alter casing. P1-223.

The company's proposal to pull certain casing was satisfactory.

Well No. 27. Wiley, alter casing. P1-221.

Approved proposal to remove portions of the casing providing the water string were not disturbed.

Well No. 29, Wiley, commence drilling. P 1-4.

Recommended depths at which water should be shut off in this well.

Standard Oil Co.-Continued.

Well No. 29, Wiley, shut off. P 1-8.

All water not excluded by landing casing. Recommended attempt be made to drive casing further and exclude all water.

Well No. 29, Wiley, supplementary to drill.

P 1-14.

Being unable to drive casing further the company proposed to proceed with drilling. This proposal was approved.

Well No. 30, Wiley, commence drilling. P1-63.

Approved proposed depth of water shut-off.

Well No. 30, Wiley, shut off. T 1-30.

Water not shut off. Recommended further work in attempt to exclude water. Well No. 30. Wiley, shut off. T1-35.

After driving the casing further water was shut off. Test satisfactory.

Well No. 30, Wiley, shut off. T1-43.

Water was encountered below former shut-off, and cased off with second water string. Test approved as satisfactory.

Well No. 30, Wiley, alter casing. P 1-132.

Approved company's proposal to remove a portion of the casing from the well.

Standard Oil Co.

T. 3 N., R. 17 W., S.B.B. & M.

SECTION 2.

Well No. 21, P. C'. O., plug. P1-1002.

Recommended certain plugging to determine the source of water. Well No. 21, P. C. O., abandon. P 1-1007.

Approved proposed method of abandonment.

Well No. 13, Cal. Star, alter casing. P 1-204.

The proposal to remove certain casing from the well was satisfactory. Well No. 24, Cal. Star, alter casing. P 1-205.

Approved proposal to remove a portion of the casing from the well.

June Oil Co.

T. 4 N., R. 15 W., S.B.B. & M.

SECTION 31.

Well No. 1, commence drilling. P1-1004.

Proposed depth of water shut-off was approved, providing oil formations were not encountered at a shallower depth, in which case a recommendation was made to bridge the well and shut off water above such formations.

T. 5 N., R. 16 W., S.B.B. & M.

Wheat and Defreest.

SECTION 20.

Well No. 1, commence drilling. P 1-157.

No estimate given by the company as to depth at which water should be encountered. Recommended close watch of formations penetrated and required a water shut-off above oil-bearing formations if encountered, in order that such formations might be properly tested.

CHAPTER IV.

VENTURA COUNTY.

By IRVING V. AUGUR, Deputy Supervisor.

This district was formerly under the supervision of M. J. Kirwan, Deputy Supervisor of District No. 1, with offices in Los Angeles. The writer took charge of it in December, 1917.

It was found, upon taking charge, that the greatest need of the district, outside of routine tests and reports of well operations, was a more thorough understanding of underground conditions and structure in the various fields. It should be borne in mind that, unlike other districts in the state, the productive areas in Ventura County are scattered from one end of the county to the other, and that each producing area, of which there are approximately thirty-five, presents entirely different underground conditions, due to the individual structures upon which they are located.

For this reason it became necessary to study each individual area separately, and the best preliminary method to such study was apparently through the construction of peg models. Consequently attention was first paid to the larger producing areas, and the following peg models erected:

(1) South Mountain field.

(2) Bardsdale field-Bardsdale dome.

(3) Simi field.

(4) Ventura field.

In addition, the following are partly completed:

(1) Bardsdale field-Montebello dome.
(2) Pico Cañon field.

Since the construction of these models, many instances have occurred which have proved their value in anticipating the depths at which oil and water-bearing Formations should be encountered and the proper depth of shut-off'. Similar results have been obtained from the use of underground contour maps, but it has been found that the peg model is more easily and quickly understood by the majority of operators in the field, and, if properly constructed, is as accurate as the contour map. In one instance the peg model proved more useful and accurate than cross-sections made by an engineer of one of the companies. In this case, the trouble lay in the proper correlation of certain cross-sections and the improper correlation in other sections, due to the impossibility of forming a mental picture of the substructure of the entire producing

area.