Davenport Water Flood Unit (Opportunity of acquisition. (In bankruptcy)
Lincoln County, OK
The referenced Unit was operated by NBI Services, Tulsa, OK. They have filed bankruptcy and are liquidating their assets. This Unit produced 10 MMBO under primary recovery and 10 MMBO under Water flooding. The Pure Sand has multiple stringers and our research should only one stringer was flooded and other stringers were bypassed. So, we helped sold this unit to Cano Petroleum in 2004 when it was producing only 5 BOPD. Cano increased the production to 115 BOPD and it was planning to ASP flood it but due to sharp decline in oil price Cano went bankrupt and NBI bought it. BUT NBI didn't do any work on it and the production again declined to 4-5 BOPD. We think this unit has great potential to increase production by workovers and improved recovery methods. We have ORRI in this Unit. That is why we are approaching you to see if you will consider buying it. You will have to directly contact NBI and Bankruptcy court. Cano was considering ASP flood that, according to Surtek, could recover 20-30% of
OOIP. Cano’s estimates for OOIP in Davenport are 58 MMBO. 20% of 58 MMBO is 11.6 MMBO. New polymers are now available that have been successfully used in Oklahoma Sandstone reservoirs containing brines with High Salinity or TDS. One company is Chemical Flooding Technologies (CFT) of Tulsa, OK, which specializes in the deployment of chemical enhanced oil recovery (EOR) technologies to increase and capture oil production from mature oil fields. Their chemical flooding design philosophy emphasizes the use of reservoir brine and commercially available surfactants at ultra low concentrations to minimize project costs. It is combined with injecting a large fractional pore volume of chemicals to maximize recovery. CFT has full field testing and piloting capabilities, experienced personnel and is actively commercializing chemical EOR technologies. NBI Services, Inc. should have cores of two wells drilled in 2004. They would be happy to make a representation in your office upon request. We have all the technical information and would be glad to share it with you. It can be bought very cheap or even for plugging responsibility.
WORK OVERS
Poor Open whole completionsThe first time well-bore cement was introduced in 1919 and the first perforations ever were performed in 1929. The Davenport field was discovered in 1924 and almost all the wells were completed as open holes. It was prewire-line log era. Going over the scout tickets we were able to see there were two major problems with these open hole completions that adversely effected the oil production.
A. The casing was set too low in many wells. Therefore, the upper portion of the pay was left unproduced.
B. The Prue Sand has multiple stringers in the Davenport Field. In many wells the drilling was terminated after penetrating a few feet of the upper stringer of the Prue Sand. The lower stringers were left unproduced.
We feel lots of oil is left unproduced behind the casing and in the stringers below the total depth. We recommend close examination of all the completion reports and logs for work over. The perforations should also be checked for under or over perforated zones.
Bypassed Pay Zones.
The water flood was started in 1950. The field was initially developed on 10 acre spacing. However, three increased density wells, #184, 185 and 186, were drilled in 1980. Since, the well #186 was drilled at the edge of the field it was a poor well. But wells # 184 and 185 revealed key information on bypassed zones, poor perforations and increased density potential as follows.
A. The well#184 had three stringers of the Prue Sand. Of these only the middle stringer was swept by the flood. Upper and lower stringers were bypassed.. The operator perforated the upper stringer and a few feet of the middle stringer. The lower stringer was not perforated and was left unproduced. This well produced 67,221 BO as of April, 1991. The EUR was approximately 105 MBO. It is our opinion this well would have produced more oil if the flooded middle stringer was not perforated at all. We don’t know if the lower stringer was ever perforated and produced as of today.
B. The well#185 also had three stringers of the Prue Sand. The flood swept only the upper stringer and the middle and lower stringers were not swept. Then middle stringer was perforated only a few feet. This well had 49, 248 BO cumulative production as of April 1991. The EUR was approximately 65,500 BO. We don’t know if the lower stringer of this well was ever perforated and produced as of today.
The wells #184 and 185 clearly show the water flood only swept that stringer of the Prue Sand that offered the path of least resistance; other stingers were left out by the flood. We feel this phenomenon is true for the multiple stringers throughout the field.
Poor Perforations
The Well #184 and 185 are good examples of under and over perforations. If these wells were not under or over perforated they would have produced more oil. Therefore completion information of all the wells should be checked for the position of the casing as well as for under, over or poor perforations
Tertiary Oil RecoverySince, water flooding has been successful in the Davenport Field it is a good candidate for tertiary oil recovery. Successful water flooding shows there is no or very little problem with plugged wells. Cano was considering ASP flood that, according to Surtees, could recover 20-30% of OOIP. Cano’s estimates for OOIP in Davenport are 58 MMBO. 20% of 58 MMBO is 11.6 MMBO.
New polymers are now available that have been successfully used in Oklahoma Sandstone reservoirs containing brines with High Salinity or TDS. One company is Chemical Flooding Technologies (CFT) of Tulsa, OK, which specializes in the deployment of chemical enhanced oil recovery (EOR) technologies to increase and capture oil production from mature oil fields. Their chemical flooding design philosophy emphasizes the use of reservoir brine and commercially available surfactants at ultra low concentrations to minimize project costs. It is combined with injecting a large fractional pore volume of chemicals to maximize recovery. CFT has full field testing and piloting capabilities, experienced personnel and is actively commercializing chemical EOR technologies. NBI Services, Inc. should have cores of two wells drilled in 2004. They would be happy to make a representation in your office upon request.
Other options for tertiary recovery may also be explored.
Looking forward to hear from you soon.
Dr. Jaffrey Zafar, President
BLUEBONNET RESOURCES CORPORATION
4216 N. Portland Avenue
Oklahoma City, OK 73112
Telephone: 405-314-5870
Fax: 405-778-2113
jaffreyzafar@gmail.com
Standard Proposal and Preliminary Agreement for Development of an Improved Oil Recovery Chemical Flood Formulation and Injection Protocol Outline Progressing to and including an Oil Recovery Project Over the Life Cycle of the Formation Exploitation.
This document outlines the typical project milestones and timeline associated with the development of a chemical flood formulation and injection protocol. Chemical Flooding Technologies brings a successful track record in chemical systems design and field piloting bridging laboratory advances with field deployment.Chemical Flooding Technologies selects projects based on the concept of being a partner throughout the entire life cycle of the formation exploitation. All work performed by Chemical Flooding Technologies, LLP is proprietary and cannot be publicly disclosed. A confidentiality agreement needs to be completed by all clients prior to detailed project discussions and before any laboratory work can be initiated.
Outlined in this document are tasks Chemical Flooding Technologies, LLP will undertake in the front-end of a chemical EOR development projec
