综合录井在水平井钻进中的作用

Application of comprehensive mud- logging technique in horizontal well drilling

在水平井作业过程中,准确判断井眼轨迹方向,有效控制层位尤为重要。MWD和LWD等随钻测井技术虽然具有有效的地质导向作用,但因随钻测井仪器自身的不足,存在一定的测量盲区。因此,仅仅依靠随钻测井资料还不能准确了解井底的岩性特征及其含油气性。相比较而言,综合录井能及时、有效地反映随钻仪器测量盲区的地层岩性及其含油气性,只有两者结合起来才能更好地为其钻进提供导向服务。

It is most important to accurately determine the well bore path and effectively control the layers while horizontal well drilling. Measuring while drilling techniques such as MWD and LWD etc. play effective geological orientation roles in the operation, but because of the disadvantage of MWD and LWD tools, that is the measuring blind area. Consequently, if only MWD and LWD data are used, the lithology characters at the bottom of well and its oil and gas features cannot be accurately known. The comprehensive mud- logging technique can timely and effectively response the formation lithology and the oil and gas features of the blind area of MWD or LWD tools. Only both data are taken into account, the better orientation service for drilling operation can be provided.