Oilfield Innovations have patented a new universal rigless P&A method of in-situ cement verification and plugging shown above, which are are similar or equivalent to other common downhole operations but costs 30% to 60% less than an offshore drilling rig P&A.

 

Step #1 (shown above) depicts vertically splitting in-situ production tubing to remove the strength of its circular shape, wherein the step requires qualification.

 

Step #2 (shown above) illustrates the “common task” of severing the tubing above the split and circulating a cleaning fluid into the annulus space between the tubing and casing.

 

 Step #3 (depicted above) shows the “common task” of placing a mechanical plug for the subsequent packer (piston) to push against and then severing above the mechanical plug to create a tubing spear that can be pushed alongside the split tubing.  Oilfield Innovations have proved the concept a tubing spear.

 

Step #4 (shown above) depicts the “common task” of inflating a packer in the casing and hydraulically pumping fluid into the well to push the packer (piston) downward to force the tubing spear alongside the split tubing, wherein the step of using proven inflatables packers requires qualification.

 

Step #5 (shown above) illustrates “common” through tubing logging measurements of the in-situ cement within the Rig-Equivalent-Window space created to measure cement bonding.  Alternatively, research shows that shale or salt  can also comprise an annulus barrier that can be confirmed by logging measurements.

 

Step #6 (depicted above) shows “common” placement of a P&A sealant (cement) plug that is supported by the compacted tubing, whereby the packer element’s casing seal prevents gas migration during sealant curing (hardening) to provide a universally compliant P&A plug.

 

Loading...

 

 

 

 

Disclaimers: Oilfield Innovations Limited (OILtd) does not promise that the site or any content, service or feature of the site or new technology will be error-free or that any defects will be corrected, or that your use of the site or technology will provide specific results. The site and its content are delivered on an “as-is” and “as-available” basis. All information provided on the site is subject to change without notice. OILtd cannot ensure that any files or other data you download from the site will be free of viruses or contamination or destructive features. OILtd disclaims all warranties, express or implied, including any warranties of accuracy, non-infringement, merchantability and fitness for a particular purpose. OILtd disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site and/or any OILtd technologies or services. You assume total responsibility for your use of the site and any linked sites or new technologies. Your sole remedy against OILtd for dissatisfaction with the site or any content is to stop using the site or any such content or technology. This limitation of relief is a part of the bargain between the parties. The above disclaimer applies to any damages, liability or injuries caused by any failure of performance, error, omission, interruption, deletion, defect, delay in operation or transmission, computer virus, communication line failure, theft or destruction of or unauthorized access to, alteration of, or use, whether for breach of contract, tort, negligence or any other cause of action. OILtd reserves the right to do any of the following, at any time, without notice: (1) to modify, suspend or terminate operation of or access to the Site, or any portion of the Site, for any reason; (2) to modify or change the Site, or any portion of the Site, and any applicable policies or terms; and (3) to interrupt the operation of the Site, or any portion of the Site, as necessary to perform routine or non-routine maintenance, error correction, or other changes.