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Period of high water cut oil Shuanghe note aquatic solution structure to improve the process and application of new technologies results


Success rate of 100 Arts, effective success rate of 96.7%. 2 to improve the production technology structure of liquid 1) to find water shutoff closed-mechanical technology of the machine technology uses closed column to find water shut-off process, to achieve completion of a trip to find water column, water shut-off, transfer layer production, and to achieve the sealed compartment sealed section of the test to solve the current machine blocking technology transfer layer to be present in secondary operations and after sealing the packer can not verify the packer and the string tightness, resulting in closure success rate and other issues. Field test the technology and application 1l3 wells, the success rate of 100 technology, efficiency 96.9 2) mechanical breakdown of card technology for plugging lost hand column without anchoring device, after the water shut-off block column slippery into the bottom, resulting in a short period, operating massive volume of work developed a hydraulic shutoff desirable mechanical card technology. The technology is based on hydraulic bridge plug as the main tool for supporting a series of card water shut-off technology, mainly by the hydraulic bridge plug, off sub, Y34l packer, bottom of the tube switch, locator tools such as supporting components, to achieve the any layer of the card cover,franklin marshall soldes, including letters to adopt the lower upper,christian louboutin pas cher, middle layer collected on the lower seal, sealing the lower middle layer of the middle layer taken. The technology combined with the column positioned to achieve a thick layer of large thin laminated card water shut-off process, the packer seal segment of the smallest card 0.69m,abercrombie fitch paris, minimum packer segment of lm. For multi-level water shut-off. The technology l997 l7-year field test wells, started in 1998 to expand and promote the use of field trials, application site has a total 184 wells, the success rate of 97 technology, efficiency 92.3) oil well acidification process technology The technology uses the retarder acid fluid systems and oil-soluble temporary plugging agent, can achieve selective acidification. Acid system used has the following technical characteristics: First, acid-rock reaction is slow, help clear the blockage deep strata; second hydrolysis product of the reservoir to stabilize the particles to prevent particle migration, and improve the acidification period; three is the use of micellar agent, with penetration and the role of dissolved heavy hydrocarbons, which can lift the block of inorganic and organic blockage; fourth is used as a pretreatment liquid solvent interaction, effectively change the wettability of the rock formation, reduce acid residues to prevent oil-water emulsions, beneficial residual acid flowback to extend the validity of acidification. 3 note aquatic solution to improve the technical structure supporting the application and effect of selection Shuanghe oilfield in North Block Ⅳ l-3 unit 4l3 note aquatic area is well south of the restructuring integrated technology solution pilot test area. Oil-bearing area area 2.29km, geological reserves of 490.7 × 10t. A total of 53 pilot test wells, injection wells which acidification of 9 wells, water shut-layer sub-l5 wells, 8 water wells subdivision, other measures 2l wells, process the success rate of 100, the effective success rate of 92. Note aquatic test area of ​​the liquid structure has been effectively improved, and achieved significant development results: ① control of three high-permeability layer of water absorption, reduced total water injection 3.8 × 10Yi1; l5 increase the potential of a low permeability layer water absorption, the cumulative increase in injection l4.37 × 10Yi1. . Fluid production structure has been adjusted to fully tap the potential of low permeability layers, the cumulative increase of oil 9144t, cumulative precipitation 28848m. . ② formation pressure test area rebounded 0.65MPa, the pressure to maintain the level reached 70.3, increased by 5.9. ③ comprehensive water test area dropped to 92.6 from the 92.8, daily oil production from the 90t up to 127t, the current remains above the l10t; oil recovery rate from 0.76% to 0.82%. ④ Recovery from the measure rose to 32.1 before the measures of 35.05, to increase recoverable reserves l4.48 × 10t. The success of the pilot test on the basis of the above note aquatic solution structure to improve the technology applied in the general promotion of Shuanghe Oil achieved economies of scale. One application of technology to improve the structure of water after the water control high permeability layer is invalid 44.0355 × 10Yi1. Increase the low permeability layer injection 328.084 × 10Yi1; technology to improve production after the application of liquid structure directly by the oil 4.5852 × 10t,abercrombie france, reduce oil production water 45.8l × 10Yi1. ; The same time, note aquatic solution structure to improve a wide range of technology applications, Shuanghe oil field water passing rate of 15.6 for the late development effect Shuanghe field laid the foundation for further improvement. [References] [1] John Lee V. Shuanghe oilfield development model [M], Beijing: Petroleum Industry Press, 1994, [2] Sun Jianping, Xu chemicals, such as Sun Jiwei, the late Shuanghe flow field development unit mouth]. Xinjiang Petroleum Geology, 1999,20 (2): 154 - 157, [edit] Xiao Yu
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