Expanding Cement Services - Oklahoma

The Work is to provide, deliver and inject expanding cement into four (4) borings drilled into rock. The cement must expand by a specific amount as it cures to couple research instruments to the rock. Clemson University will install research instruments of four strainmeters into each boring. The contractor will pour expanding cement to hold instruments in place. A. Overview 1. Contractor will provide and pump expanding cement into four (4) borings drilled into rock. Borings will be done by others. Three (3) of the borings are 140 ft deep, and one (1) of them is 1700 ft deep. All the borings are approximately 6-inches in diameter. 2. Contractor will fill each boring with expanding cement over a depth range of approximately 100 ft starting at the bottom of the boring. The volume of a 6-inch diameter boring that is 100 ft long is approximately 50 ft3. As a result, 50 ft3 of cement should be injected into each boring. A total of 200 ft3 of cement anticipated; however, Clemson University reserves the right to increase or decrease this quantity up to 20% as needed. 3. The cement should have sufficient set time to pump it into the boring. The contractor must certify the cement provided has a consistency less than 30 Bc four hours after mixing the cement. 4. The cement should expand slightly during curing. The offeror must certify that 40 to 60 percent of the cement expansion occurs after the first 24 hours. Moreover, the offeror must document that the total expansion after the first day is between 0.1% and 0.2%, and the total expansion after day 30 is between 0.25% and 0.35%. 5. The borings will be located at the North Avant Oil Field, 5 miles southeast of Barnsdale, OK and approximately 0.5 mile southwest of the small town of Wolco, Oklahoma. The UTM coordinates of one of the borings is: 761157.00 m E 4046752.00 m N and the others are within 1000 yards. The locations are shown in Appendices to Scope of Work, Appendix A – A. General Location Map. 6. The locations are cleared of brush and easily accessible. Low altitude aerial and ground photographs of the locations are shown in Appendix B--Location photographs. 7. Cement must be pumped after December 8 2021, with anticipated dates being December 10, 2021 or December 17, 2021. Clemson will coordinate other activities that must happen before the cement is pumped, so the actual date of cement delivery may vary from the dates give above. The contractor will need to be flexible. Clemson University will communicate with the contractor about the expected date and provide at least 1 week notice before we expect the contractor to be at the site. The date of work will be as is mutally agreeable between Clemson University and the successful offeror. 8. The following information will be done by others and is provided for reference only: a. Research instruments will be installed in borings by others prior to cement. delivery. Pipe attached to instruments will be placed in each boring prior to the offeror arriving on-site. The research instruments will be mounted on pipe and the expected thread size is 2-3/8 EUE 8 round. A cylindrical strainmeter instrument with a hole along its axis will be attached to the end of the pipe. The hole in the strainmeter is approximately 1-inch in diameter, and the total length of this tubing is less than 15 ft. The bottom of the 1-inch tube will be open. The offeror will pump the expanding cement into the 2-3/8 pipe and out the bottom, filling the annulus with cement upward from the bottom. b. The geology of the area over the depth interval of the borings is expected to be characterized by shale with interbedded sandstone and limestone. The permanent water table is expected to be several hundred feet below ground surface. The water table is expected to be below the depth of the shallow borings and above the bottom of the deep boring. As a result, the shallow three holes are expected to be free of standing water at the time of cementing, whereas the deep hole is expected to contain water.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 03 -	Concrete, Cast-in-Place Concrete.
Division 31 -	Earthwork, Grading, Earthwork Methods.
Division 33 -	Utilities.