盐水钻井液侵入地层电阻率校正方法探讨:以埕岛油田馆上段为例

Research and Prac tice of the Resistivity Correction in Saline Mud Invading Formation: A Case Study of UpperN gM ember in Chengdao Oilfield

( 1 中国石油大学, 东营2 胜利油田有限公司地质科学研究院)

1. China University of P etroleum,
Dongy ing 257061, 2. Geologica l Scientific Re search
Institute, Shengli O ilf ie ld Co. Ltd. , SINOPEC,
Dongy ing 257015, China

Chengdao o ilfie ld is the first larg e o ilfie ld w hich put into
production in the ex trem e ly shallow w ater areas in China.
Upper Ng m em be r is a litho log ic- structura l reservo irw ith the
superh igh perm eability and the h igh saturation. Upper Ng
reservo ir is d istr ibu ted over lappedly and linked ly in the
o ilfie ld, characterized by shallow bu ria,l laterally larg e
va riation, thin sing le bed and com plicated loca l o i-l wa ter
re lation. Genera lly Chengdao o ilfie ld uses b rine w ater mud
during drilling. It has a strong im pact on resistiv ity log, and
therefo re a ffects the co rrect solution to the fo rma tion
saturation. Th is pape r ana ly zes the im pact induced by the
br inew ate rm ud, and a lso d iscusses the resistiv ity co rrection.
Th is resu lt has a sign ificant effect on the interpretation of
o rig ina l o il saturation and reserves calcu lation of Uppe r Ng
m em be r in Chengdao o ilfie ld.