*BOE –Approximately 8.0 MCF gas equals one barrel of oil has been historical average However, this value changes as prices changes but during the past few years has sometimes was perhaps as many as15 MCF gas per barrels at times.
** Average Lee County vertical production for approximately 1,150 well has averaged in excess of 100,000 BOE per wells for all the wells. However, RH&A wells average for the wells it supervised over 150,000 BOE which equals our approximately four (4) times (400%) oil and gas production per well compared to other operators (whom averaging over 35,000 BOE) of vertical wells in Lee County. This success is credited primarily to extensive experience, technical database, and prolonged and extreme work ethic of the staff of RH & A.
Second Drilling Boom - Prior Medium Radius Horizontal Drilling Programs
HEC and affiliates have been a consultant, participant or operator well over 300 horizontal re-completed wells during the past twenty five years within the Giddings Field. Of 1,146 Austin Chalk vertical wells drilled in Lee County, Texas, over 300 wells have been re-entered for medium radius horizontal drilling. These 300 re-entry horizontal wells are projected to recover a well over 100,000 BOE additional oil then produced in the original vertical wells. This includes the early experimental wells drilled in 1986 through early 1988, which often have low recoveries, and wells drilled through depleted reservoirs due to very short distance of less than even 1,000 wells.
In 1987, Ray Holifield and Bechtel Investments Corporation of San Francisco formed BecField Horizontal Drilling Services Company (Becfield) in Houston, Texas. BecField was the first service company in the world to offer reliable commercial re-entry medium radius horizontal drilling techniques and equipment. BecField drilled exceeded over 200 hundred horizontal wells during the time Ray Holifield was Chairman and fifty percent (50%) owner until end of 1990.
Third Drilling Boom – Short Radius Horizontal Drilling Technology
A large number of older horizontally drilled wells were drilled with only one lateral in the approximately 600 to 800’ thick Austin Chalk interval in the best part of the Austin Chalk such as Lee County. Long involvement with horizontal drilling has given our team the opportunity to observe significant amounts of known hydrocarbons are being recovered by re-entry re-completion programs presently being conducted in the Austin Chalk, substantial amounts of oil and gas remain unrecovered in many wells previously drilled utilizing medium radius horizontal drilling technology. Additional oil and gas reservoirs will be recovered by drilling new laterals using either medium radius or short radius technology in horizontal wells previously drilled with only one lateral. Although many vertical wells have previously produced very large amount of oil and gas from the upper Austin Chalk, previously utilized medium radius horizontal drilling technology with curves of 250 to 500 feet did not allow economic horizontal drilling of the upper Austin Chalk. Use of re-entry short radius horizontal drilling technology allows the selected development of substantial oil and gas reserves in certain areas in the Giddings field not otherwise available for development. Considerable risk exist for some faulting in the Austin Chalk for the movement of hydrocarbons have been well proven to move from the lower Austin Chalk upward into the upper Austin Chalk. Faulted areas in the Austin chalk but die out within the Eagle Ford shale. Some people are now formulating one theory certain that relativity unfaulted areas (in areas with little upward and downward movement caused by the underlying deeper salt may actually provide the Austin Chalk to be the seal for those Eagle Ford wells having high reserves.
In many wells, reserves in undeveloped sections of the lower Austin Chalk have not been developed by either vertical or medium radius horizontal drilling technology. A many of the re-completed wells of this program will be re-entered one or more times to develop additional oil and gas reserves. Economic return will be highly enhanced for subsequent re-completions because the purchase price of the leasehold/well has already been recovered and the window in the casing prepared for kick-off in the original re-completion can even be utilized for subsequent re-completions. The cost reductions are so large economic return for the subsequent re-completion can often be two or more times the original re-completion return on investment.