Geology of north Personville field, Limestone County, Texas

Conference · Mon Feb 01 04:00:00 EST 1988 · AAPG Bull.; (United States)

OSTI ID:5878014

Zamboras, R L

In excess of 50 Mitchell Energy Corporation wells have been drilled in the North Personville field, Limestone County, Texas. In order to understand the variables that affect the ultimate reserves within the carbonate section, two conventional cores from Mitchell Energy Corporation wells were analyzed. The Mitchell Energy Corporation 1 Muse-Duke and 1 Ralph Spence limestone sections were studied to determine the relationship between log-derived reservoir parameters and the limestone lithologies for field wide application. Production at North Personville field is lithology selective. Five distinct oolitic grainstone shoal cycles are identified and correlate field wide. The sequence of events that led to the development of reservoir quality grainstones are (1) the infilling by oolitic grainstone shoals on an irregular Buckner Formation paleosurface. This surface was modified by pre-Cotton Valley limestone salt activity such that carbonate deposition did not take place or was eroded over structurally high areas, (2) Cotton Valley limestone deposition culminating with the deposition of a narrow belt of ooid grainstones, (3) nearly complete occlusion of primary porosity and permeability by the deposition of marine cements followed by chalky microporosity formation, (4) post-depositional salt and basement tectonics that pervasively fracture the more competent ooid grainstone facies producing additional secondary porosity and permeability, (5) hydrocarbon generation from the overlying Bossier marine shales migrates into the porous permeable Cotton Valley Limestone. The uppermost shoal cycle is preferentially charged due to their proximity to the source beds.

• Research Organization: Mitchell Energy Corp., Woodlands, TX (USA)
• OSTI ID: 5878014
• Report Number(s): CONF-880301-
• Conference Information: Journal Name: AAPG Bull.; (United States) Journal Volume: 72:2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
CARBONATE ROCKS
FEDERAL REGION VI
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGY
LIMESTONE
LITHOLOGY
MINERAL RESOURCES
NORTH AMERICA
OIL FIELDS
PERMEABILITY
PETROLEUM DEPOSITS
POROSITY
RESERVOIR ROCK
RESOURCES
ROCKS
SALT DEPOSITS
SEDIMENTARY ROCKS
SHALES
SOURCE ROCKS
TECTONICS
TEXAS
USA