Conception of A Coring Tool with Eccentric Drilling Type Simultaneous Casing in Difficult Formation

WANG Hai; JIANG Rong-qing

doi:10.3969/j.issn.1672-7428.2001.01.012

2001 No. 1

Article Contents

Article navigation > DRILLING ENGINEERING > 2001 > (1): 25-26

Next Article Previous Article

WANG Hai, JIANG Rong-qing. Conception of A Coring Tool with Eccentric Drilling Type Simultaneous Casing in Difficult Formation[J]. DRILLING ENGINEERING, 2001, (1): 25-26. doi: 10.3969/j.issn.1672-7428.2001.01.012

Citation:

WANG Hai, JIANG Rong-qing. Conception of A Coring Tool with Eccentric Drilling Type Simultaneous Casing in Difficult Formation[J]. DRILLING ENGINEERING, 2001, (1): 25-26. doi: 10.3969/j.issn.1672-7428.2001.01.012

Conception of A Coring Tool with Eccentric Drilling Type Simultaneous Casing in Difficult Formation

Publish Date: 01 January 2001

Abstract

Abstract

Being dead against drilling and coring problems encountered in difficult formation, a coring tool with eccentric drilling type simultaneous casing used in difficult formation is considered by the combination of DTH drilling with simultaneous casing, local area reverse circulation process and rigid type coring tool. The design principle, design concept, operating theory and features of the drilling tool are expounded.

FullText(HTML)