·开发设计·

高稳定双感应-聚焦侧向发射电路设计

张志刚1何豹1梁峻2段云峰1朱先佑1

(1.中国石油川庆钻探工程有限公司测井公司重庆400021；

2.中国石油西南油气田分公司天然气研究院四川成都610213)

摘要：双感应-聚焦侧向测井资料能求取地层真实电阻率，利用曲线差异可有效识别地层水淹层，快速评价低电阻率油层；利用资料反演技术还可确定地层渗透等特性。在实际应用双感应-聚焦侧向测井过程中，仪器老化和电路设计缺陷等造成测井资料失真或很难取全取准资料的情况时有发生。通过分析，其主要原因是仪器发射模块稳定性差，故文章重新设计了新式的高稳定性发射电路，解决了在高温环境下、双感应-聚焦侧向测井仪长时间作业时不稳定的问题。

关键词：双感应测井;发射电路;高温测试;实际应用

作者简介：第一张志刚，男，1980年生，工程师，2003年毕业于江汉石油学院测控技术与仪器专业，现在中国石油川庆钻探工程有限公司测井公司测井技术分公司从事测井采集工作。E-mail:cqlczzg@163.com

文章编号：中图法分类号：P631.8+11

收稿日期：(2014-10-10编辑：韩德林)

基金项目：长江大学大学生创新性实验项目(项目编号：2013008)

The High Stable Transmitter Design for Dual Induction Focused Lateral Logging Tool ZHANG Zhigang1HE Bao1LIANG Jun2DUAN Yunfeng1ZHU Xianyou1

(1.LoggingCompanyofChuanqingDrillingEngineeringCo.Ltd.,CNPC.,Chongqing400021,China;

2.ResearchInstituteofNaturalGasTechnologyofPetrochinaSouthwestOilandGasFieldCompany,Chengdu,Sichuan610213,China)

Abstract：The data of dual induction focused lateral logging tool can obtain real information of resistivity, and the difference of curve can be used to effectively identify the water flooded layer, then evaluate the low resistivity oil layer quickly. It also can determines the stratigraphic permeability by using data inversion. In the practical application, the logging data distortion may caused by the aging equipment or circuit design defects, which is so often appeared in the logging work. After the analysis, we found the low stability of the old transmitter is one of the main reason. In that case, the redesigned transmitter circuit has a high stability, it solved the instability problem for dual induction focused lateral logging tool which was working in high temperature for a long time.

Key word： dual induction focused lateral logging tool, transmitter circuit, high temperature testing, application

0引言

1503XB双感应-聚焦侧向测井仪一次测量可以同时得到自然电位、深感应、中感应和浅聚焦侧向数据，利用这些数据可以进行地层真实电阻率的求取和快速评价低电阻率油层。双感应-聚焦侧向具有较深的探测深度，测井资料通过快速迭代反演技术可以有效的判断地层的侵入等特性。……