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Associated Oil Co.-Continued.
Well No. 15, Morganti, cement casing. P 3-25.

Proposal to cement string of s}" casing approved.
Well No. 15, Morganti, make pumping test. P 3-109.

Proposal to make pumping test in lieu of bailing test approved. Well No. 1.), Morganti, shut off. T 3-80.

Pumping test ; see P 3-109 for water shut-off not satisfactory. Approval willheld a waiting further results of pumping. Woll No. 33, Morgauti, shut off. T3-14.

Test for water shut-off satisfactory. Well No. 53, Morganti, shut off. T3-62.

Test for water shut-off satisfactory. Well No. 54, Morganti, shut off. T 3-3S.

Test for water shut-off satisfactory. Well No. 51, Morganti, shut off. T 3-18.

Test for water shut-off satisfactory. Well No. J.), Morganti, shut off. T 3-:51.

Recommended mudding and cementing another string of casing. Well No. 5.), Morganti, shut off. T 3-S2.

Test was made to determine practicability of mudding formations back of 10" casing, see report T 3-51. Pumps could only deliver i bbl. of water per minute into formation, under 300 lbs, pump pressure, and it was therefore decided mudding was not necessary. Well No. .5.1, Morganti, shut off. P 3-1.79.

l'roposal to mud and cement string of s!" (asing approved. Well No...), Morgauti, shut off. T 3-11.).

Bailing test impracticable account of beaving shale and rise of oil fluid. Well passed for pumping test. Pinal Dome Oil Company. Well No. 1, Elizalde, abandon. P 3-5.

Proposal to abandon approved. l'nion Oil ('ompany of California. Well No. 2, Elizalde, drill.

l’roposed casing program approved. Well No. 2, Elizalde, shut off. T 3-83.

Test for water shut-o!f satisfactory.

SECTION 3.
United Western Consolidated Oil Co.
Well No. 1, shut off. T 3-12.

Test for water shut-off satisfactory. Bailer showed 5 gals, black sulphur water. Well No. 1, drill, supplementary. P 3-16S.

l'roposal to cement S}" casing at 1627' in order to test for productivity of formations below that depth approved. Well No. 1, shut off. T 3-122.

Test for water shut-off satisfactory.

SECTION 11. ('ontra Costa Oil Syndicate. Well No. 1, drill. P 3-111.

Proposed drilling program approved.

QUINTERO LEASE. l'nion Oil Company of California. Well No. 1, shut off. T 3-12.

The company reported that 121" 10-1b. casing collapsed, after cementing and bailing at about 1200'. The casing was swaged. Bailing test showed water coming into the hole. The well, being a prospect well, was passed for further drilling, with the understanding that in case productive formations were entered auother string of pipe would be cemented to protect same.

T. 10 S., R. 37 W., S.B.B. & M.
Standard Oil ('ompany.
Well No. 1, abandon. P 3-22.

Work of abandonment approved identically as proposed.
Well No. 1, abandon. P 3-114.

Requirements of department, for abandonment, based on all information fileed, have been complied with.

TOG SAZZISI LEASE.
Standard Oil ('ompany.
Well No. 1, abandon. P 3-23.

Proposal to plug and abandon approved.
Well No. 1, abandon. P 3-113.

Requirements of department, for abandonment, based on all information filecl, have been complied with.

CHAPTER VI.

KERN, TULARE AND INYO COUNTIES.

By R. N. FERGUSON, Deputy Supervisor.

District.

In the district, covered by Kern, Tulare and Inyo counties, the developed oil fields all lie within the boundaries of Kern County. There are four groups of fields in all. In certain instances the groups contain several more or less distinct fields. The Kern River field is the only field on the east side of the San Joaquin Valley. On the west side of the valley there are the Sunset-Midway-McKittrick group of fields; the Belridge-North Belridge, or IIopkins-Lost Hills group, and the Devils Den field which is as yet undeveloped. Organization.

The work of this department for the fields mentioned, is conducted from the office of the State Mining Bureau at Taft. A branch office is maintained at Bakersfield for the purpose of facilitating inspection, witnessing tests of water shut-off, and other field work required by law. All field work on the west side of the valley is handled by engineers and inspectors working out of the office at Taft.

General Summary.

During the year there were 435 new drilling welis reported as compared with 682 wells during the year previous. This falling off in drilling activity was general throughout all fields except Sunset where a decided increase was shown. In the Lost Hills and Kern River fields the decrease was partly due to the completion of drilling campaigns by certain companies but in general it was ascribed to scarcity of drilling materials. There were 364 wells deepened or redrilled during the year. This is a slight increase over this class of jobs for the year previous. There is little change in the number of abandonments as compared between this year and last year.

The number of decisions issued on proposed operations and tests for water shut-off are a good indicator of the amount of work required of this department in the various fields. In addition to this more or less routine work the task of assembling data and making special investigation of a number of formal complaints has been a large one.

Table No. 1, which follows, summarizes the operations that have been carried on in the various fields of the district during the year:

[blocks in formation]

Records.

The status of records furnished the department, to the end of the fiscal year, is shown in Table II. It will be noted that the production reports filed account for 4458 wells. Our information from other sources is to the effect that 4837 wells in the district are producing oil. The production reports therefore account. for 95 per cent of the producing wells and 63 per cent of all wells drilled.

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Appeals to Commissioners.

During the year the Board of Commissioners heard one informal appeal from a recommendation of the Deputy Supervisor and one formal appeal from an order of the State Oil and Gas Supervisor.

The informal appeal was that of Baker & Henshaw from the recommendation of the deputy in the matter of the method of abandonment of Baker and Henshaw well No. 2, Section 12, T. 26 S., R. 20 E., M. D. B. & M., as contained in report No. P-4-927, dated December 22, 1917. The recommendation appealed from was as follows:

“The well should be cleaned out to original bottom, 1880', the bottom of the hole should be thoroughly mudded under pressure and a cement plug placed from 1880' to 1845'. The hole should then be plugged with clay up to 1800' and a cement plug placed at that depth after which the plugging with clay should proceed up to a depth of 1600' where another cement plug should be placed. The hole should then be plugged with clay up to 1265' where a cement plug should be placed that will extend up into the 81" casing at least 10' or to 1243'. The 81" casing should then be freed and pulled up and the formations below the shoe of the 10" casing (landed at 1211') should be thoroughly mudded under a pressure of 400 lbs. If the 10" casing can be loosened it should be pulled and a cement plug placed against the walls of the hole from 1210' to 1195'. If the 10" can not be loosened, it should be shot between 1210 and 1195' and the shot cavity filled with cement. If the 10" casing can be freed it should be pulled, and as it is pulled back, the hole should be mudded under pressure.

In the event it does not free, the 10" should be ripped at the following depths (or until it comes free): 1180'-1195', 1030'-1130', 870'1010', 7307-812', 570'-620', and mud pumped out through the rips under pressure. A cement plug should be placed against the walls of the hole from 870' (shooting the 10" casing if necessary) up in 12}" casing to 550'. If the 12}" casing can not be freed at 550', it should be shot and a solid cement plug placed against the walls of the hole between the depths of 180’ to 550'. A cement plug should be placed against the walls of the hole between 100' and 157' and between 365' and 377'. The hole should then be mudded under pressure and a solid olay plug placed against the walls of the hole from 365' up to 147'. The hole should then be filled with surface formation to the top.''

The hearing was held on March 20, 1918, and the decision of the commissioners was as follows:

“That Baker and IIenshaw be required to clean the well out to a depth of 1670', either by rotating down with tubing or by carrying a string of casing, and pump in sufficient cement to fill the hole up to within 15' or 20' of the shoe of the 81" casing, in the presence of a representative from the State Mining Bureau, and that the abandonment of the hole from that point be done in accordance with the recommendation of the Deputy Supervisor, making use of any modification of previous recommendations that seem warranted by the developments resulting from the work on the lower portion of the hole.''

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