Chemical wellbore plug for zone isolation in horizontal wells /
(a) method of placement of the plug so that slumping would
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (a) method of placement of the plug so that slumping would (ii) spotting a gel just downstream of the wellbore plug and a chemical wellbore plug in a horizontal wellbore. Two main A new technique for zone isolation in horizontal wells has a sufficiently high holding pressure (about 340 psi for 37 and TEXPLUG. Experimental apparatus were designed and Based on experimental results, the proposed new isolation been proposed. The new technique consists of three brine pill. For TEXPLUG, a suitable completion brine would cellulose). Further, results indicate that only TEXPLUG has constructed to study placement techniques and to measure the contain 100,000 ppm NaCi and 4 lb/bbl CMC (carboxyl methyl could be used to make wellbore plugs with sufficiently high displacement of formation gels. experimental studies are required, particularly to evaluate for gas and/or water shut-off, were selected for the study. holding pressures of the wellbore plugs. The horizontal holding pressures. Three chemicals, used in the oil industry in. long, 1 in. I.D. plug) necessary for a wellbore plug. mechanisms involved. The experimental results indicate that a not occur, and (b) selection and testing of chemicals that of this research is to investigate the feasibility of setting plug could be placed in a horizontal wellbore with minimum problems associated with the wellbore plug were investigated: sand. The X-ray CT scanner was used to obtain cross- sectional images of the plug to help understand the shear sequential stages: (i) setting a chemical wellbore plug in slumping, if the plug is introduced into a viscous completion squeezing the gel into the zone to be isolated, and (iii) technique appears to be viable. However, further The commercial names of these chemicals were SEAL, PERMASEAL the effectiveness of the wellbore plug in conjunction with the horizontal section upstream of the zone to be isolated, to clean the borehole prior to production. The main objective washing or drilling through excess gel and the wellbore plug wellbore models consisted of PVC pipes internally lined with |
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| Item Description: | "Major subject: Petroleum Engineering". Vita. |
| Physical Description: | xix, 151 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 100-104. |