More Than Two Thermal Recovery Effect-Cleanup Technology Trial

Arranged according to plan,design optimization study of the thermal recovery process,the sub-blocks of multi-cycle steam stimulation to test the adaptability of the well cleanup,cleanup test 13 well,and the Association completed to improve the thermal recovery cleanup test theory.Topics achieved the following results:1.In order to improve thermal recovery test results,the Association achieved outstanding achievements and provided a theoretical basis.By four kinds of foaming agent static and dynamic performance evaluation and optimization,were preferably suitable for Fuyu thermal recovery cleanup foaming agent;a single tube of different fluid to inject the physical simulation experiments show that nine kinds of cleanup oil displacement efficiency.:Steam ＋gas + foaming agent to drive the best.And discharge order.The twin-tube physical model experiments optimized for supporting the North three blocks,east 11 blocks,east 9 blocks of optimal drive for the way,while optimized the design of the six wells implementation of the program.by numerical simulation to calculate the different permeability and different effective thickness of the best mixed note than to optimize the design of plates,the best injection strength of the design illustrated,the best foam injection volume to optimize the design plates.2.Form a cleanup mode for Fuyu thermal recovery and improve the test results of the thermal recovery wells.Appropriate cleanup tests were able to improve the effect of multi-cycle thermal recovery.Thermal recovery measures test in six blocks,two well-type to carry out 13well.Statistics 13 test wells cumulative oil 6014.6t,and the average single well of increasing oil 462.7t.Bubble cleanup test is simple and cost-effective.The comparative analysis of routine handling and cleanup tests in the same block,cleanup measures well thermal recovery effect was significantly better than conventional wells.Economic benef-its are very substantial.Statistics 13 test wells,the cumulative increased oil 6014.61,calculating the oil price 3000 yuan/ton,and the total income was 18.0438 million yuan.13 wells cost into 1.0286 million yuan of the drug,operating costs of $ 180,000,with a total investment of 1.2026 million yuan,on a steam cost of 1.208 million yuan,the input-output ratio is 1:7.5.3.Carry out innovative thermal recovery wells of carbon dioxide bubble cleanup tests,and make a breakthrough test results,a single well increased oil 400t;In order to improve the old wells hot mining results,a bold attempt to conventional completions old wells bubble cleanup test has achieved significant test results.