Doheny-Pacific Petroleum Co.-Continued. Proposal to deepen to 1450' approved. Proposal to deepen Well No. 27 from 2015' to 2165' rejected unless work is done in stages and without an appreciable increase in water. Rejection of proposal for further deepening was based on data given below: Company proposed to deepen in 50′ stages instead of 20' stages, as recommended in Report P3-171. This department ruled as follows: "From data at hand as per our Report P 3-171, Well No. 27, Lease 1, is stratigraphically as deep or deeper than the neighboring wells. Unless new data can be submitted to change this view or to show that the water now made by this well is either top water or water let into oil zone by some other well, the recommendation, of May 13, 1918, as per Report P 3-171, will be unaltered, except that at your option the well may be bailed dry after each 20′ of deepening and left undisturbed at least 12 hours for bailing test by this department. This bailing test will, if you desire, eliminate the necessity of pumping the well for test." Well No. 1, Lease 2, shut off. T3-19. Test for water shut-off satisfactory. Well No. 1, Lease 2, land casing. P 3-55. Company proposed to cement string of 81" casing at 2450′ in order to shut off water at 2307'. Recommended sealing all formations (shale) with cement, between depths of 1910′ and 2450', in order to protect strata from which Union Oil Company Well No. 2, Escolle, was producing, sealing operations to be witnessed by representative of this department. Well No. 1, Lease 2, cement. P3-56. Complying with recommendations in our report No. 13-55, see above, sealing operations at this well were witnessed as follows: "Hole tested for circulation. Got returns of muddy water. Casing set on bottom and tested with pumps to 300 lbs. pressure. Casing lifted 18". "Started hydraulic lime at 4:12 p.m. Got fluid return at 3:14 p.m. Pump slowed down at 3:17 p.m. and stopped at 3:18 p.m. Mixture of 60 sacks hydraulic lime delivered. Fluid return at casing head throughout the delivery. Time 6 minutes. "Set pipe on bottom and put in first plug at 3:20-30 p.m. Fluid return stopped. Pipe delivery line reconnected, and casing lifted off bottom 18", at 3:22-30 p.m. Time 4 minutes. "Delayed here, mixing 8 sacks cement, pumping water into mixing pans, etc. Casing lifted 6′′ more. Started pumps 3:30 p.m. Time 7 minutes. "Started delivery of mixture of 150 sacks cement 3:30 p.m. Pump down at 3:42 p.m. Started 3:42-45 p.m. Down 3:43 p.m. Time 13 minutes. "During delivery of cement the returning fluid was at first muddy water, showing traces of oil and gas. Toward end of delivery fluid changed to thin mud, slightly foamy. "Set casing on bottom, took off elevators, and disconnected delivery line 3:45 p.m. Placed second plug, connected delivery line, put on elevators, and pipe lifted 18" at 3:48-50 p.m. Time 5 minutes. "Started water 3:48-50 p.m. Figured 153 bbls. necessary to drive plugs together. Toward end of water delivery fluid returning cleared up to muddy water. "The following are successive pump pressures from beginning to end of water delivery: 3:48-50 p.m.- 4 lb. 4:23-00 p.m. 60 lb. 4:26-30 p.m.--120 lb. 4:33-00 p.m.-250 lb. 4:36-00 p.m.-500 lb. "Plugs together. Delivery 153 bbls. Time 47 minutes. Pump down and casing dropped at 4.36 p.m. Pressure partly released and casing moved 6′′ to bottom. At 4:38 p.m. operation completed. Total time for lime and cement, 1 hour and 24 minutes. "From the manner in which the work was performed, as well as the condition of the hole, shown from behavior of fluid returns at the surface, it is reasonable to conclude that the sealing operation was a success. "The well was therefore passed for a test for water shut-off." Well No. 1, Lease 2, bridge. P3-70. While drilling out below 84" shut-off for test the hole filled up 2000' with water. It was suspected that this water was coming from below cementing point. However, company's proposal to bridge just below 8" shoe in order to test for water shut-off was approved as most logical step in determining source of water. Well No. 1, Lease 2, redrill. P3-91. Proposed to make further effort to bridge under the 8" casing. Approved. Well No. 1, Lease 2, shut off. T3-70. In test for water shut-off of 84" casing on bridge proposed in Report P 3-91, the well showed small amount of water. It was concluded that this water was coming through bridge. It was decided to drill out bridge and note whether or not water increased. Bailed dry at 9:00 a.m. January 2d. At 9:00 a.m. January 3d found fluid level at 1700', showing that water had come in at average rate of 89 gals. per hour. Started drilling on bridge at 11:00 a.m. January 3d. Drilled to 2492′ and at 12:30 p.m. January 3d, found fluid level at 1235', showing that 465′ of water had entered the hole during the two hours the plug was intact and the one and one-half hours after drilling started. This represented an average of 370 gals, per hour for the entire period, but the water came in much faster after the drilling was done. From the above data it was concluded that the water which entered the hole came from formations below the 84" shoe and mostly leaked past the bridge. Well No. 3, Lease 2, drill. P3-177. Proposed to make temporary shut-off with 12" casing and prospect ahead before making final shut-off with 10" casing. Proposal approved. Well No. 3, Lease 2, shut off. T3-127. Temporary formation shut off at 396′ with 124" casing to exclude water at 310′, entering the hole at the rate of 50 bbls. per hour, in order to test formations between depths of 396′ and 850' for water. A 20′′ hole was drilled and about 220 cu. ft. mud was converted to mud fluid and placed behind the 124" casing at the surface. The hole was drilled "dry" below 396′. Bailing test showed the temporary shut-off to be successful and that formations between depths of 396′ and 850′ were dry. When the prospecting operations are concluded it is the company's intention to mud and cement string of 10" casing and then remove the 124" casing from the hole. Well No. 4, Lease 2, shut off. T3-57. Test for water shut-off satisfactory. Well No. 4, Lease 2, deepen. P3-125. Proposal to deepen well 75' approved. Well No. 6, Lease 2, bridge and test. P 3-128. Proposal to bridge and test water shut-off approved. Well No. 6, Lease 2, shut off. T3-111. Bailing test showed no water coming in above bridge proposed in Report No. P 3-128. Bailing tests showed the 12" hole to be filling at the rate of about 1' per hour. Deputy recommended running casing tester, as there was some old pipe in the hole. Casing tester was placed at bottom at 8:30 a.m. August 2, 1917. Tester was pulled at 11:30 a.m. August 2d and came up dry. One pound of aniline (red) dye was put into the hole outside the 124" casing at this time and the deputy recommended that the hole be drilled ahead (dry) 50′ with the idea that if the water appearing in the hole were native to formations between the 12" shut-off the flow would increase as the drill entered further into the shales, or that if there were a small leak around the shoe the dye would appear in the hole. The hole was drilled ahead 50′ and bailed to bottom at 9:00 a.m. August 3, 1917. At 7:00 p.m. August 3, 1917, bailer was measured to new bottom at 1085′ and came up empty. Bailer was run again and brought up about two gallons of water and a showing of tar. It was concluded from the foregoing that the water appearing at the initial test was drilling water which, in drilling the 50′ of new hole, was completely recovered from the shales in which it had been absorbed. Well No. 41, Peshine, shut off. T3-18. Test for water shut-off satisfactory. Well No. 42, Peshine, drill. P3-93. Requested more accurate elevation. Drilling program approved. Well No. 42, Peshine, shut off. T3-99. Test for water shut-off satisfactory. Well No. 42, Peshine, deepen. P3-175. Proposal to deepen from 1540′ to 1670′ rejected. Recommended deepening and testing by 30' stages. Company submitted additional data, see Report P3-175, above, showing that Peshine No. 3 was drilled to a greater stratigraphic depth, than proposed for No. 42, without encountering water. This department therefore recommended to drill ahead "dry" 50′ and at the new depth bail the hole dry and let stand 12 hours for test. Further deepening depends upon result of said test. Well No. 51, Peshine, shut off. T3-55. Test for water shut-off satisfactory. Associated Oil Co.-Continued. Well No. 52, Peshine, drill. P3-94. Proposed drilling program approved. Proposed casing program approved. Associated Oil Co. SECTION 20. Well No. 1, Peshine, shut off. T3-2. Test for water shut-off satisfactory. Well No. 3, Peshine, drill. P3-174. Proposed casing program approved. Well No. 3, Peshine, shut off. T 3-117. Temporary formation shut-off made with 12" casing at 128' shoe driven 20 into blue shale. Hole drilled dry to 1324'. Hole bailed dry for test and showed no water was encountered below depth of temporary shut-off. Well No. 3, Peshine, shut off. T3-126. As set forth in report No. T3-117 no water was logged below depth of 128'. 10" casing was mudded and cemented at 1324'. Test for water shut-off satisfactory. Shell Company of California. TODOS SANTOS RANCHO. Well No. 1, Newhall Tract, drill. Proposed drilling program approved. Well No. 1, Newhall Tract, shut off. T3-32. Test for water shut-off satisfactory. Well No. 1, Newhall Tract, drill, supplementary. P 3-57. Proposal to cement string at 10" casing at 1840' instead of 12" 45-lb. casing at 2000' approved. Well No. 1, Newhall Tract, shut off. T3-49. Test for water shut-off satisfactory. Well No. 1, Newhall Tract, shut off. T 3-97. Test for water shut-off satisfactory. Well No. 1, Newhall Tract, cement. P 3-117. Supplementary proposal to cement 10" casing at 2795′ approved. Well No. 1, Newhall Tract, drill, supplementary. P 3-169. Proposal to cement string of 81" casing at 3245' approved. Well No. 1, Newhall Tract, drill, supplementary. P3-195. Proposal to prospect ahead and determine depth of next shut-off approved. Union Oil Company of California. Well No. 2, Escolle, cement. P 3-51. Proposal to cement string of 81" casing at 1860' approved. Well No. 3, Escolle, shut off. T 3-56. Test for water shut-off satisfactory. Well No. 4, Escolle, shut off. T3-101. Proposed casing program approved. Amending stated location of well; proposed casing program approved. Well No. 9, Escolle, shut off. T3-123. Test for water shut-off satisfactory. Well No. 10, Escolle, drill. P3-162. Proposed drilling program approved. Well No. 11, Escolle, drill. P3-163. Proposed drilling program approved. Associated Oil Co. T. 9 N., R. 35 W., S.B.B. & M. Well No. 4, Morganti, drill. P 3-119. Proposed casing program approved. Well No. 4, Morganti, drill, supplementary. P3-126. Casing estimates changed on account of reported error in elevation. Revised estimates approved. Well No. 4, Morganti, shut off. T3-114. In making bailing test for water shut-off with 12" casing at 960' it was found that the fluid level had risen 521' in 12 hours. The test indicated that another water stratum had been entered or else the shut-off was a failure. However, in view of the fact that no water had been logged at this stratigraphic depth in neighboring wells and 150 sacks of cement had been used for a shut-off, this department decided that the water was coming into the hole from some source other than around the shoe and strongly urged the company to test casing for collar leaks due to insufficient tightening. The company ran a casing tester and found casing leaking at the rate of 670 gals. per day. The casing was screwed up 26 inches. After casing was tightened the tester showed one pint of water at a depth of 945' in one-half hour. Well No. 4, Morganti, shut off. T3-132. The 10" 40-lb. casing was mudded and cemented at 1472'. It was reported that the hole below 960' was mudded, using a large quantity of mud, but that the mud did not appear at the surface. The foregoing is an indication of the porosity of the fracture zones in the Casmalia field shales. Shales were mudded for the purpose of preventing surface waters from working down through fractures into the oil zone. Test for water shut-off satisfactory. |
