The present disclosure includes a cleaning system for cleaning clean a tubing, casing, or components of an oil well. In some aspects the cleaning system includes a washing tool having a body configured for insertion into a component of an oil well. The body may include a proximal end and a distal end and define an inlet at the proximal end, a channel in fluid communication with the inlet, and an outlet in fluid communication with the channel. The outlet my extend circumferentially along a perimeter of the body. In some configurations, the washing tool may be configured to clean the component by ejecting fluid in a 360 degree range without movement of the tool.
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
E21B 41/00 - Equipment or details not covered by groups
B08B 9/043 - Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
The present disclosure includes a cleaning system for cleaning clean a tubing, casing, or components of an oil well. In some aspects the cleaning system includes a washing tool having a body configured for insertion into a component of an oil well. The body may include a proximal end and a distal end and define an inlet at the proximal end, a channel in fluid communication with the inlet, and an outlet in fluid communication with the channel. The outlet my extend circumferentially along a perimeter of the body. In some configurations, the washing tool may be configured to clean the component by ejecting fluid in a 360 degree range without movement of the tool.
E21B 37/00 - Methods or apparatus for cleaning boreholes or wells
E21B 34/14 - Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
The present disclosure includes an injection system for providing abrasive slurry output density in a system. In some aspects, the injection system can include a first vessel configured to receive a fluid from a high-pressure pump, a plurality of valves in selective communication with the first vessel, and a controller in communication with the plurality of valves. The controller can be configured to actuate the plurality of valves between a first state, in which a slurry is delivered to the first vessel and a second state in which the slurry is delivered from the first vessel. In some configurations, the controller may actuate the valves from the second state to the first state when an amount of slurry is less than a first threshold, and actuate the valves from the first state to the second state when the amount of slurry is greater than a second threshold.
Embodiments of this disclosure provide a method and apparatus to inject an abrasive fluid mixture into a high-pressure fluid flow using a clear fluid pump. The high-pressure fluid flow may be used in abrasive jet perforating and hydraulic fracturing applications in oil and gas wells, and other oilfield related work that uses high pressure fluids containing abrasive material. The embodiments include inserting abrasive material downstream of a high-pressure pump, such that a pump without specialized capability for abrasives (e.g., a clear fluid pump) can be used instead of a specialized pump that can withstand abrasives (e.g., hydraulic fracturing pump, oilfield cementing pump).
A system and method for jet perforating within a well are disclosed. A jet perforating tool configured to be lowered inside a production tubing string comprises a tool body with a passage, an inlet in the upper section, perforating jets in the lower section, and a stepped outer diameter configured to seat on a production tubing string restriction such as a seat nipple. The tool may be lowered into the production tubing string without the need to trip the production tubing string in and out of the wellbore.
E21B 23/02 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
E21B 29/02 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground by explosives or by thermal or chemical means
6.
Pressure actuated flow control in an abrasive jet perforating tool
There is disclosed herein a method and apparatus for using rupture pins to selectively open jets on a jet perforating tool. Rupture pins inserted in jets within a jet perforating tool are configured to rupture at pre-designed thresholds, thereby opening the jet to begin a perforating job, or to circulate fluid through the tool. Also disclosed are systems and methods for holding the rupture pins within the tool prior to rupture.
There is disclosed herein a method and apparatus for using rupture pins to selectively open jets on a jet perforating tool. Rupture pins inserted in jets within a jet perforating tool are configured to rupture at pre-designed thresholds, thereby opening the jet to begin a perforating job, or to circulate fluid through the tool. Also disclosed are systems and methods for holding the rupture pins within the tool prior to rupture.
A system for injecting high pressure abrasive fluid into an abrasive jet tool in a wellbore comprises an abrasives hopper; a slurry tank connected to the abrasives hopper; a low pressure abrasive pump connected to the slurry tank; a first high pressure vessel connected to the low pressure pump through a first high pressure valve; a high pressure non-abrasive pump connected to the first high pressure vessel through a second high pressure valve; and an abrasive jet tool connected to the first high pressure vessel through a third high pressure valve.
A system and method for jet perforating within a well are disclosed. A jet perforating tool configured to be lowered inside a production tubing string comprises a tool body with a passage, an inlet in the upper section, perforating jets in the lower section, and a stepped outer diameter configured to seat on a production tubing string restriction such as a seat nipple. The tool may be lowered into the production tubing string without the need to trip the production tubing string in and out of the wellbore.
A system and method for jet perforating within a well are disclosed. A jet perforating tool configured to be lowered inside a production tubing string comprises a tool body with a passage, an inlet in the upper section, perforating jets in the lower section, and a stepped outer diameter configured to seat on a production tubing string restriction such as a seat nipple. The tool may be lowered into the production tubing string without the need to trip the production tubing string in and out of the wellbore.
E21B 23/02 - Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
E21B 29/02 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground by explosives or by thermal or chemical means
An apparatus for performing abrasive jet perforating in a well comprises a generally cylindrically shaped tube with a side, an upper portion, and a lower portion; a plurality of smooth holes drilled into the side of the tube; abrasive jets mounted in at least some of the plurality of smooth holes; protective plates mounted in the side of the tube and surrounding the abrasive jets to hold the abrasive jets in place; wafers recessed into pockets on the protective plates and surrounding the abrasive jets to protect the abrasive jets from damage due to rebound of abrasive-carrying fluid slurry ejected by the abrasive jets; and fasteners securing the protective plates to the side of the tube and positioned away from the rebound of abrasive-carrying fluid slurry ejected by the abrasive jets.
E21B 43/114 - Perforators using direct fluid action, e.g. abrasive jets
E21B 29/00 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
12.
Apparatus and method for isolating flow in a downhole tool assembly
An apparatus for isolating fluid flow in a bottomhole tool assembly comprises a generally cylindrically shaped flow tube with a side, a top, and a bottom; an upper ball seat connected to the top of the flow tube; a lower ball seat connected to the bottom of the flow tube; a plurality of openings in the side of the flow tube; a tapered inner diameter in the upper ball seat, acting as a ball valve; a tapered inner diameter in the lower ball seat, acting as a ball valve, smaller than the tapered inner diameter in the upper ball seat; an upper sub attached to the bottomhole tool assembly; a lower sub attached to the bottomhole tool assembly; shear pins connecting the upper ball seat to the upper sub; and a limiting pin in the lower sub below the lower ball assembly.
A method and system are provided for injecting high pressure abrasive fluid into an abrasive jet tool. The method and system comprise a slurry tank connected to an abrasive hopper and a low pressure abrasive pump for circulating abrasive slurry and transferring the slurry to a high pressure vessel. The method and system also contain a high pressure non-abrasive pump connected to a high pressure valve for pressurizing the high pressure vessel prior to injecting abrasive fluid into the abrasive jet tool.
An apparatus for abrasive jet cutting comprises an abrasive jet perforating tool coupled rotatably to a tubing string and a horizontal indexing tool coupled connectably to the perforating tool. A tubing swivel, an extension tool with protective sleeve, and an anchor may also be used. A method for abrasive jet cutting comprises determining well parameters for a well; assembling, according to the well parameters, the apparatus for abrasive jet perforating; and using the perforating tool to perforate tubular members in the well. A horizontal indexing tool is used to rotate the perforating tool and the perforating tool is used to cut tubular members in the well. An extension tool with a protective sleeve is used to protect the apparatus. A tubing swivel may be used to allow the perforating tool to rotate freely and an anchor may be used to prevent the perforating tool from moving vertically.
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