Electrically powered setting tool and perforating gun
a technology of electric power and setting tool, which is applied in the direction of fluid removal, earthwork drilling and mining, and wellbore/well accessories, etc., can solve the problems of consuming electricity of tools, slowing down the conventional setting tool motor, and rendering them inoperabl
Inactive Publication Date: 2019-01-10
MAGNUM OIL TOOLS INT
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AI Technical Summary
Benefits of technology
The tool achieves rapid and precise setting of bridge plugs, reducing the risk of line creep and plug damage, while being environmentally friendly and eliminating the need for explosives, power charges, and complex logistics.
Problems solved by technology
No known setting tool powered by electricity through wireline has the capability of setting bridge plugs quickly enough to be acceptable to industry.
The motors of conventional electrically powered setting tools consume electricity in this range at an amperage in excess of the capability of conventional select fire perforating guns.
Amperages in excess of this value burn out switches in the perforating gun, rendering it inoperable.
The effect is to slow down conventional setting tool motors and prolong the time to set a bridge plug to a value, such as about 5-20 minutes, which is unacceptable to industry.
In these types of operations, many detrimental things can happen in 5-20 minutes, and no one wants to take such risks.
Taking minutes to set a plug is sometimes a problem.
When you wait minutes, the plug moves due to line creep, especially when you pump or reel off a couple of miles of cable, the line may begin shrinking or lengthening due to well conditions, i.e. pressures, temperatures, etc., and weight being put on the line or taken off the line, over this time frame, causes this phenomenon as well.
Shorter than that, the violent setting may damage the plastic or composite plug, and longer than 60 seconds then plug the may creep up or down the hole and cause setting depth accuracy issues.
Method used
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[0034]Electrically powered setting tools have theoretical inherent advantages over ballistic setting tools. A ballistic setting tool includes a propellant charge which, when ignited, delivers a large quantity of gases into a chamber to drive a piston in a direction pulling the mandrel of a bridge plug and thereby radially expanding the bridge plug. After each use, the ballistic setting tool has to be disassembled, the pressure chamber thoroughly cleaned, all O-rings or other seals replaced and then reassembled in preparation for being used again. In a situation where multiple bridge plugs, for example twenty, are to be set in a well, the service company has to have enough setting tools at the well location to set all of the proposed bridge plugs plus a few spares because the disassembly work has to be done in a shop which may be many miles and many hours from the well location. An electrically powered setting tool has none of these disadvantages and can be used, perhaps hundreds of ...
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An electric setting tool powered through a cable or wire line for setting bridge plugs or other settable downhole tools and which may be used in conjunction with a select fire perforating gun. The electric setting toot is adapted to receive DC power and set a tool in the range of 20 to 60 seconds while operating at under 2.0 amps. The composite tool may be comprised of multiple perf guns subs, the electric setting tool, and bridge plug or other settable tool.
Description
[0001]This divisional application claims priority to U.S. application Ser. No. 14 / 922,969, filed Oct. 26, 2015, and U.S. Provisional Application 62 / 122,597, filed Oct. 24, 2014, which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]Bridge plugs or other settable well tools are widely used in completing oil and gas wells, such as in the horizontal leg of a horizontal well. In some situations, a bridge plug is set in casing in such a well before perfing and fracing a hydrocarbon bearing formation above the bridge plug. One conventional technique is to attach a ballistic setting tool below a select fire perforating gun. A ballistic setting tool incorporates a relatively slow burning propellant to deliver a quantity of high pressure gas to operate a piston mechanism to pull on a mandrel of the bridge plug and thereby expand the bridge plug into sealing engagement with the inside of a casing string.[0003]Ballistic setting tools have been attached to the bottom of a ...
Claims
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IPC IPC(8): E21B23/06E21B43/1185
CPCE21B43/1185E21B23/06
Inventor FRAZIER, W. LYNNMCADOO, TIMOTHY K.SCHIRO, LEEKOEHL, WADE A.ZEINERT, RICHARD C.
Owner MAGNUM OIL TOOLS INT