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Title: Coiled tubing drilling: Real time MWD with dedicated powers to the BHA

Abstract

This paper describes and analyzes the development and ongoing field trials of a Real Time MWD Coiled Tubing Drilling System. The new system holds great promise for advancing the state of coiled tubing drilling for certain applications. The system is designed for through-tubing, short radius re-entry and drilling highly deviated wells as horizontal laterals to a geologic target with minimum wellbore tortuosity. Currently, 4-1/2-in production tubing is the smallest re-entry candidate. Real time MWD and Bottom Hole Assembly (BHA) control is achieved by the use of a combination hydraulic and electric umbilical internal to the coiled tubing (CT), allowing continuous data collection and selective surface control of the BHA components. This communication line allows orientation in 10{degree} increments (or less) while drilling, applies weight-on-bit and operates a reusable circulating valve. In addition, the umbilical provides real-time monitoring of weight-on-bit, circulating pressures of the drilling fluid internal and external to the BHA, dedicated hydraulic system bottom hole pressure, downhole temperature and survey data from logging equipment.

Authors:
; ;
Publication Date:
OSTI Identifier:
434040
Report Number(s):
CONF-960525-
TRN: IM9709%%474
Resource Type:
Conference
Resource Relation:
Conference: 28. offshore technology conference, Houston, TX (United States), 6-9 May 1996; Other Information: PBD: 1996; Related Information: Is Part Of 28. annual offshore technology conference: Proceedings. Volume 4: Field drilling and development systems; PB: 942 p.
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; MWD SYSTEMS; DESIGN; FIELD TESTS; DRILLING EQUIPMENT; REAL TIME SYSTEMS; WELL DRILLING; DIRECTIONAL DRILLING; PROCESS CONTROL

Citation Formats

Leismer, D, Williams, B, and Pursell, J. Coiled tubing drilling: Real time MWD with dedicated powers to the BHA. United States: N. p., 1996. Web.
Leismer, D, Williams, B, & Pursell, J. Coiled tubing drilling: Real time MWD with dedicated powers to the BHA. United States.
Leismer, D, Williams, B, and Pursell, J. 1996. "Coiled tubing drilling: Real time MWD with dedicated powers to the BHA". United States.
@article{osti_434040,
title = {Coiled tubing drilling: Real time MWD with dedicated powers to the BHA},
author = {Leismer, D and Williams, B and Pursell, J},
abstractNote = {This paper describes and analyzes the development and ongoing field trials of a Real Time MWD Coiled Tubing Drilling System. The new system holds great promise for advancing the state of coiled tubing drilling for certain applications. The system is designed for through-tubing, short radius re-entry and drilling highly deviated wells as horizontal laterals to a geologic target with minimum wellbore tortuosity. Currently, 4-1/2-in production tubing is the smallest re-entry candidate. Real time MWD and Bottom Hole Assembly (BHA) control is achieved by the use of a combination hydraulic and electric umbilical internal to the coiled tubing (CT), allowing continuous data collection and selective surface control of the BHA components. This communication line allows orientation in 10{degree} increments (or less) while drilling, applies weight-on-bit and operates a reusable circulating valve. In addition, the umbilical provides real-time monitoring of weight-on-bit, circulating pressures of the drilling fluid internal and external to the BHA, dedicated hydraulic system bottom hole pressure, downhole temperature and survey data from logging equipment.},
doi = {},
url = {https://www.osti.gov/biblio/434040}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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