Measurement of dynamic reservoir conditions, Volume 1: Final report

Technical Report · Mon Dec 01 04:00:00 EST 1986

OSTI ID:5588876

Boyer, II, C M; Briscoe, F H; Camp, B S; Dobscha, F X; Malone, P G; Schwerer, F C; Stubbs, P B

A joint venture between the US Department of Energy, the USX Corporation (formerly the United States Steel Corporation), and the Gas Research Institute was initiated to evaluate the geologic and reservoir parameters which affect the stimulation and production and coalbed methane. To accomplish this, a single-zone coalbed methane well was completed into the Mary Lee and Blue Creek coal seams in the Warrior basin of Alabama. Following the successful drilling and coring of the well, extensive reservoir testing resulted in a measured coal seam permeability of 1 millidarcy and a skin factor of -4 to +1. In-situ state-of-stress tests in the Blue Creek coal seam indicated a vertical primary closure and a secondary horizontal closure. Coal and rock core samples were collected from the well and evaluated for flow and mechanical properties. These tests resulted in reservoir and mechanical values consistent with well-test data and underground fracture observation. Geologic studies established the geometry of the target reservoir and the surrounding strata. Unstimulated production tests were performed to establish baseline production parameters for both the Mary Lee and Blue Creek coal seams. Utilizing the collected data from the various test programs, a state-of-the-art hydraulic stimulation was designed and implemented. Detailed monitoring of selective variables during the stimulation permitted an initial evaluation of the success of the stimulation. Following stimulation, production testing evaluated the impact of the hydraulic stimulation on gas and water production. Underground observation of the induced hydraulic fracture revealed fracture containment in the target coal seam with a vertical and horizontal component. Utilizing a fracture-simulation model and the stimulation-pressure record, a combined vertical and horizontal fracture was created that closely matched the observed in-situ fracture. 18 refs., 47 figs., 10 tabs.

• Research Organization: USX Corp., Monroeville, PA. USS Technical Center
• DOE Contract Number: AC21-82MC19404
• OSTI ID: 5588876
• Report Number(s): DOE/MC/19404-2527-Vol.1; ON: DE88001020
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000 -- Coal
Lignite
& Peat-- Mining
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
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030900* -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
ALABAMA
ALKANES
COAL DEPOSITS
COAL SEAMS
COMMINUTION
DATA
DEGASSING
DRILLING
ENGINEERING
EXPERIMENTAL DATA
FEDERAL REGION IV
FLUIDS
FRACTURING
GEOLOGIC DEPOSITS
GEOLOGIC SURVEYS
GEOLOGY
HYDRAULIC FRACTURING
HYDROCARBONS
HYDROLOGY
INFORMATION
INJECTION WELLS
MECHANICAL PROPERTIES
METHANE
MINERAL RESOURCES
NATURAL GAS WELLS
NORTH AMERICA
NUMERICAL DATA
ORGANIC COMPOUNDS
PERMEABILITY
PETROLEUM GEOLOGY
PRODUCTION
RESERVOIR ENGINEERING
RESERVOIR FLUIDS
RESERVOIR PRESSURE
RESERVOIR ROCK
RESOURCES
STIMULATION
SURVEYS
USA
WELL DRILLING
WELL LOGGING
WELL STIMULATION
WELLS