致密砂岩气田小直径地层压力测试器测试评价技术-《油气井测试》

文章信息/Info

Title:: Test and evaluation technology of small diameter formation pressure tester in tight sandstone gas field

作者:: 刘绪钢1; 陆健1; 刘晓东2; 李华3; 张飞龙4; 1.中国石化华北油气分公司采气二厂河南郑州 450000
2.中国石化华北油气分公司油气开发管理部河南郑州 450000
3.中国石化华北油气分公司采气一厂河南郑州 450000
4.中国石化中原石油工程公司地球物理测井公司河南濮阳 450701

Author(s):: LIU Xugang1; LU Jian1; LIU Xiaodong2; LI Hua3; ZHANG Feilong4; 1.No.2 Gas Production Plant of SINOPEC North China Oil & Gas Company, Zhenzhou, Henan 450000, China
2.Oil and Gas Development Management Department of SINOPEC Huabei Oil and Gas Company, Zhengzhou, Henan 450000, China
3.No.1 Gas Production Plant of SINOPEC Huabei Oil and Gas Company, Zhengzhou, Henan 450000, China
4.Geophysical Logging Company of SINOPEC Zhongyuan Petroleum Engineering Company, Puyang, Henan 450701, China

Keywords:: tight sandstone reservoir; small diameter tester; formation pressure test; prediction chamber volume; reservoir producing degree; reservoir connectivity; evaluation method

摘要:: 鄂尔多斯盆地DN气田为典型的低孔低渗致密砂岩储层，采用常规地层压力测试，干点过多，测试成功率仅为3303%。小直径地层压力测试器测试时，定点深度以自然伽玛为基准，仪器下放和数据传输均由电缆完成，一次下井能进行多点测量，预测室大小可根据储层特征在0～20 ml之间调节。在DN气田致密砂岩储层应用，测试总成功率达590%。依据小直径地层压力测试器测试数据，结合地层测试、试气情况，区域特征，以及4口典型井资料进行分析，其结果为区块储层动用情况、纵横向连通性判断，以及新井投产方案选择等提供了可靠依据。小直径地层压力测试器的成功应用，为致密砂岩油气田快速、高效获得地层压力提供了新的测试评价方法。

Abstract:: DN gas field in Ordos basin is a typical tight sandstone reservoir with low porosity and low permeability. When conventional formation pressure test is used, there are too many dry points, and the success rate of test is only 3303%. When the small diameter formation pressure tester is used for testing, the fixed point depth is based on the natural gamma ray, the running of instrument and data transmission are completed by the cable, the multipoint measurement can be carried out by one trip test operation, and the size of the prediction chamber can be adjustedbetween 0~20 ml according to the reservoir characteristics. This method has been applied in tight sandstone reservoir of DN gas field, and the total success rate of test is 590%. According to the test data of small diameter formation pressure tester, combined with formation test, gas test situation, regional characteristics, and data of four typical wells, the results provide reliable basis for the block reservoir production situation, judgment of vertical and horizontal connectivity, and selection of new well production scheme. The successful application of smalldiameter formation pressure tester provides a new test and evaluation method for fast and efficient formation pressure acquisition in tight sandstone oil and gas fields.