By Edwin Lee Rawlins
Read or Download Back-Pressure Data on Natural-Gas Wells and Their Application to Production Practices. United States. Bureau of Mines. Monograph 7 PDF
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Extra info for Back-Pressure Data on Natural-Gas Wells and Their Application to Production Practices. United States. Bureau of Mines. Monograph 7
3ize of casing: 8~-inch. 840. Producing through 8~-inch casing. Xo tubing. Back-pressure data Test A Shut-in pressure at wellhead, lb. per sq. in. gage Reading no. IB~fore test After test TestB Working Ilh~~d, lib. per sq. Ill. gage Rate of flow,M cu. ft. per 24 hours Reading no. Shut-in pressure at wellhead,lb. per sq. in. gage I Before test I Alter test Working preE8Ure at wellhead, lb. per sq. in. M cu. ft. 2 thousands M cu. ft. 705 805 i 550 1. 2 ......... 3 ......... 4 ......... 5 .........
The shape and size of the sand grain has an appreciable effect on coefficient C and exponent n of the flow equation. 3. The distance of travel of the gas and diameter of the flow tubes influence only coefficient C of the flow equation. 4. For all practical purposes, the porosity of the packed porous media affected only coefficient C of the flow equation. APPLICATION OF BACK-PRESSURE TESTS TO NATURAL-GAS PRODUCTION PROBLEMS During the progress of the study of gaging gas-well deliveries discussed in this report, 966 back-pressure tests were made on 582 gas wells, in Oklahoma, Kansas, Texas, Louisiana, Wyoming, Montana, California, West Virginia, and Pennsylvania.
Data and calculations from back-pressure tests of a gas well> showing effect of liquid in the well bore (Comparison of deliveries before and after open flow of well)l Location of well: Depew field, Okla. First sand: 3,188 feet: last sand: 3,200 feet. Size of casing: 6%-inch. No tubing. Back-pressure data Before open flow of well Reading no. Shut-in pressure at wellhead, lb. per sq. in. gage After open flow of well Working pressure at wellhead, lb. per sq. in. gage Rate of flow, M cu. ft. 119 Shut-in pressure at wellhead, lb.
Back-Pressure Data on Natural-Gas Wells and Their Application to Production Practices. United States. Bureau of Mines. Monograph 7 by Edwin Lee Rawlins