Showing posts with label geology. Show all posts
Showing posts with label geology. Show all posts

Sunday, April 26, 2015

Acquisition



Texas Energy Exploration, LLC is a privately owned company that holds oil and gas leases in some of the most desirable locations on the Brookshire Dome, Waller County, Texas.

The leases are in between and directly off setting producing oil and gas wells and known proven reserves. Several successful wells have been drilled on the Texas leases. The drilling success rate in the Brookshire Field over the last several years has shown that 8 out of 10 wells drilled have found reserves of oil and gas above 3,000 ft. The Texas Railroad Commission has set the daily allowable rate of production per well at 300 barrels of oil per day.

Reserves of the Brookshire Dome Miocene gas sand have produced up to 1 BCF of gas at 1,700 ft.(Mosbacher Well). At the current market price of $4.50/mcf for gas, the value of each well would be $4.5 mm.

The Brookshire Dome Field is located in Austin and Waller Counties, Texas, 35 miles west of Houston on and surrounding the I-10 Freeway. The Brookshire salt Dome is one of the largest salt domes located within the gulf coast region of Texas. The cap rock of the Brookshire Salt Dome is 3.5 miles by 4 miles and covers approximately 5,000 acres.

The acreage controlled by Texas Energy Exploration, LLC and the current production locations are south of IH-10 in the southeast and northeast quadrants which are the most productive area’s of the Dome. The terrain is flat to very gently rolling except where bisected by the Brazos River, and Bessie’s Creek. The lands are devoted principally to light agriculture and horse farms.


Wednesday, April 22, 2015

Geology



The Brookshire Dome is located within the Gulf Coast geological province, which extends 700 miles from the Rio Grande to Florida. Approximately 450 miles of the trend is within Texas. This is one of the most prolific oil and gas producing provinces in the world.

The Gulf Coast is a homocline with regional dip into the Gulf of Mexico. A thick sequence of Cenozoic sediments exceeding, in places, 20,000 feet were deposited across a flat coastal plain. Alternating transgressive and down warping resulted in a series of structurally and stratigraphically important seaward-marching continental/marine "hingeline" trends.

The provenance of Gulf Coast oils are the thick marine shale sections, just seaward of these "hingelines", the cleaner reservoir rocks are in close proximity to these generative shale’s. The result is a series of productive "fairways". These are designated by stratigraphic nomenclature, i.e. the Wilcox, Wilcox-Yegua, Jackson-Yegua, Frio-Vicksburg, Marginulina-Frio and Miocene trends, to name a few.

Accumulation along these trends is controlled by both structure and stratigraphy. Sedimentary downloading and consequent deformation has resulted in a series of normal (down-to-the-coast) fault systems. These growth faults are associated spatially with prominent anticlinal structures in the down-thrown blocks that have formed some of the most prolific Gulf Coast fields. Within these fields, secondary faulting and diverse depositional processes have combined to produce a variety of complicated structural and stratigraphic traps.

Of at least equal importance as hydrocarbon habitat are the various salt domes for which the Gulf Coast is noted. It was, in fact the discovery at Spindletop Salt Dome, in 1901 that opened the modern age of petroleum exploration and production.

Salt domes are pillars of salt which have risen from depth in response to sedimentary deposition and difference in the specific gravities of the salt and overlying (surrounding) sediments. This salt flowage varies extensively from dome to dome; some domes have surface expression, others are deep-seated. Domal shape may vary from straight-sided to mushroom topped with salt "overhangs" which mask the sequence of underlying sands.

In general, salt domes are classified as either "shallow" or "deep" piercement (shallow being those that extend within 2500' of the surface). Salt Domes are associated with prolific oil and gas fields.