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Detailed study of the reservoir in three sections Pucheng Oilfield applications in North Block Pu 67


The knowledge of integrated petrological study of the region to find the residual oil zone. The results show that: 3.2.1 the sand reservoir three reservoirs on the 5-10 research and deployment of Pu 5-4 Well found thick sand, sand three groups on the sand 6 sand is a fluvial facies body, while the Pu River in the center of just 5-4 wells. According to the initial production wells and 5-4 Pu production analysis, the remaining oil in the well area is rich in a large production potential, so scrapped the proposed PU 5-4 with a sidetrack well to tap the potential. Because the sand is a reservoir in three 5-10 overall governance program, implementation of new wells in the deployment of 3 new wells Pu 5-151,5-176,5-177 wells. Pu 5-151 has been put into the present well on the sand 6 sand group of three 4.2 m / 1 layer,[link widoczny dla zalogowanych], since the initial spray, hydraulic 8MPa, daily oil production more than 20t. Detailed study of 118 reservoirs in the three sections of Pucheng Oilfield Application Pu 67 North Block No. 3O 1-5 Volume III 3.2.2 reservoir sand reservoir research and deployment of the discovery of new drilling ~ Pu Pu 7-107 5 A ll three of the sand Well there is a thick sand group 5, the oil sands, and sand burial depth of the oil-water interface with the previous studies do not coincide, by studying the test data in the region, found wells Pu l13 once again seeking production of oil, have some production potential, thus expanding the three sand oil reservoir in the 1-5 area and geological reserves. To this end we have the basis of sequence stratigraphy and sedimentary petrology theories, combined with well log information analysis: sand in the region is not a single sand body, but two Recessed sand body. So the concept of using mobile units will be set into the sand sand sand three groups 51,[link widoczny dla zalogowanych],52, 5 two mobile units, and proposed use of the Pu Pu 6-155 oil production and water injection wells 7 wells of a ll experiments. Through the implementation of the region can form injection patterns, Pu 6-155 production capacity of wells is very good. Therefore, three in the sand reservoir in the 1-5 scheme in 2003 the preparation of comprehensive deployment of new oil wells ll3 Pu, Pu 5 water injection wells of a ll the program, so that the formation of the region, a reasonable injection patterns. 6-10 3.2.3 Reservoir sand reservoir in the three studies and deployed in the North Block Pu 67 in the 6-10 sand three reservoirs, the sediment source from the North East, in the 6-10 sand III deposited, the rich material resources, water carrying capacity of sediment is relatively not very strong, able to fast deposition of clastic sediments, and deposition time is relatively long, so the oil sands in the region are well developed. In the sediment thickness, and good oil sands, the lower and upper sand sand body has certain physical differences in the oil field development in the reservoir to produce large differences between layers, single sudden and single production, the result is the interlayer use is not balanced. To this end, fully integrated with the dynamic basis, we put forward a three-sand reservoir in the 6-10 block of North Pu 67 strata subdivision mining methods. Oil wells in the original, based on full use of old wells, deploying two remaining oil well network implementation and improvement of injection patterns. 9 oil wells were deployed (including three in the sand strata in oil wells 6-7 3, wells 1; sand strata in the three wells in the 8-9 4, wells 1.) 4 new wells Implementation Results Analysis on Pucheng Oilfield three sections of Pu 67 North Block of the reservoir detailed study of the deployment of new wells 13, in 2002, a March 2003 period, a total implementation of the new wells 12 (Sand III 1 - 5 program has not yet implemented), production of new wells l1 I (well 9, well 2), better than the effect of new wells, initial production wells average IJ liquid 19.8t / d, daily oil production 10.6t / d, the water cut 46.4. The current production capacity of 8 wells at liquid 13.4t / d, daily oil production 7.1t / d, the water cut of 47.2, cumulative oil production of new wells 1.5049 �� 10t (production see table below). Three sections Pucheng Oilfield in North Block Pu 67 new production wells Economic Evaluation Table 5. Through the deployment of the implementation of Shasan reservoir 11 new wells, and achieved good economic results. Average investment per new wells were calculated by six million yuan, the new wells static payback period of 6 years,[link widoczny dla zalogowanych], conversion of new wells l1 investment (600 �� l1) �� 6 a l100 million. Crude oil prices calculated at 1,500 yuan in 2002, new well-effectiveness 1500 �� 1.5049 = 2257.35 million for the 1100:2257.35 input-output ratio = 1:2.05. First author: Court grams of red, female, assistant engineer,[link widoczny dla zalogowanych], and now Plant of Zhongyuan Oil Field Geological Team in oil development. Location (457532),[link widoczny dla zalogowanych], Henan Fanxian. Telephone (0393) 4841953 (office) Received: 15 January 2003 1O
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