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Title: A combined perforating and well testing system

Abstract

Underbalanced perforating is widely used in well completions and is considered by many operators to be an effective method of obtaining improved well productivity. A measurement of downhole pressure before, during and after perforating can be made by installing a pressure gauge on the gun-string. By using a wireline, the added capability of real-time read-out on surface allows the entire operation to be monitored 'live.' Correct underbalance can be accurately established prior to shooting, there is an unambiguous shot indication, and a pressure transient analysis can be made during the initial flow or fill-up period. From this we can obtain an estimate of permeability, skin damage and, possibly, static reservoir pressure, which is a useful supplement to the shut-in buildup analysis which usually follows if flow reaches surface. Any subsequent conventional well-test can of course be planned without the need to retrieve or run in additional equipment since the pressure gauge is already in place.

Authors:
; ;
Publication Date:
OSTI Identifier:
5604085
Report Number(s):
CONF-8511174-
Resource Type:
Conference
Resource Relation:
Conference: SPE production technology symposium, Lubbock, TX, USA, 11 Nov 1985
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; NATURAL GAS WELLS; PERFORATION; PRESSURE MEASUREMENT; WELL COMPLETION; OIL WELLS; DATA ANALYSIS; DRILL PIPES; FLOW RATE; FORMATION DAMAGE; LEADING ABSTRACT; MEETINGS; MONITORING; PERMEABILITY; PRESSURE GAGES; PRODUCTION; READOUT SYSTEMS; REAL TIME SYSTEMS; WELL LOGGING; WELL PRESSURE; ABSTRACTS; DOCUMENT TYPES; DRILLING EQUIPMENT; EQUIPMENT; MEASURING INSTRUMENTS; PIPES; RESERVOIR PRESSURE; WELLS; 020300* - Petroleum- Drilling & Production; 030300 - Natural Gas- Drilling, Production, & Processing; 020200 - Petroleum- Reserves, Geology, & Exploration; 030200 - Natural Gas- Reserves, Geology, & Exploration

Citation Formats

Westaway, P J, El Shafie, I, and Wittman, M J. A combined perforating and well testing system. United States: N. p., 1985. Web.
Westaway, P J, El Shafie, I, & Wittman, M J. A combined perforating and well testing system. United States.
Westaway, P J, El Shafie, I, and Wittman, M J. 1985. "A combined perforating and well testing system". United States.
@article{osti_5604085,
title = {A combined perforating and well testing system},
author = {Westaway, P J and El Shafie, I and Wittman, M J},
abstractNote = {Underbalanced perforating is widely used in well completions and is considered by many operators to be an effective method of obtaining improved well productivity. A measurement of downhole pressure before, during and after perforating can be made by installing a pressure gauge on the gun-string. By using a wireline, the added capability of real-time read-out on surface allows the entire operation to be monitored 'live.' Correct underbalance can be accurately established prior to shooting, there is an unambiguous shot indication, and a pressure transient analysis can be made during the initial flow or fill-up period. From this we can obtain an estimate of permeability, skin damage and, possibly, static reservoir pressure, which is a useful supplement to the shut-in buildup analysis which usually follows if flow reaches surface. Any subsequent conventional well-test can of course be planned without the need to retrieve or run in additional equipment since the pressure gauge is already in place.},
doi = {},
url = {https://www.osti.gov/biblio/5604085}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1985},
month = {Tue Jan 01 00:00:00 EST 1985}
}

Conference:
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