A setting device for a gravel packing system includes a housing having a slurry supply passage, a fluid return passage and a gravel packing port disposed therein. A weight responsive return valve is operatively associated with the housing for communicating an upper portion of the return passage with
A setting device for a gravel packing system includes a housing having a slurry supply passage, a fluid return passage and a gravel packing port disposed therein. A weight responsive return valve is operatively associated with the housing for communicating an upper portion of the return passage with a well annulus exterior of the housing in response to reciprocation of a work string to which the setting device is attached. A hydraulic setting piston is operatively associated with the housing for setting a liner hanger of the gravel packing system in response to a first increase in fluid pressure within the supply passage of the housing. A hydraulically actuated supply valve is operatively associated with the housing for communicating the gravel packing port with the supply passage in response to a second increase in fluid pressure in the supply passage. The supply valve includes a sliding supply valve sleeve having an open central passageway extending therethrough open at both the lower and upper end of the sleeve. A check valve is disposed in a lower portion of the housing below the supply valve for permitting flow return fluid upward therethrough and for preventing downward flow therethrough. The gravel packing system includes a liner hanger releasably connected to the setting device, and a liner valve connected to a lower end of the liner hanger.
대표청구항▼
A setting device for a gravel packing system, said setting device comprising: a housing having a central slurry supply passage and a fluid return passage defined therein, said return passage being an annular return passage concentrically disposed about said slurry supply passage, and having a gravel
A setting device for a gravel packing system, said setting device comprising: a housing having a central slurry supply passage and a fluid return passage defined therein, said return passage being an annular return passage concentrically disposed about said slurry supply passage, and having a gravel packing port disposed through a wall thereof, said housing including: an outer housing assembly; a lower inner housing member centrally received within said outer housing assembly and fixedly attached thereto, said gravel packing port being defined through both said lower inner housing member and said outer housing assembly; and a central flow tube, having an upper end sealingly received in an upper bore of said outer housing assembly, and having a lower end sealingly received in a bore of said lower inner housing member, a majority portion of said central supply passage being defined by a bore of said flow tube, and a majority portion of said annular return passage being defined between an outer surface of said flow tube and said outer housing assembly; connecting means for connecting an upper end of said setting device to a work string; weight responsive return valve means, operatively associated with said housing, for communicating an upper portion of said return passage with a well annulus exterior of said housing in response to reciprocation of said work string and for communicating said upper portion of said return passage with said well annulus in response to setting weight down on said setting device, said return valve including: a return valve sleeve slidably disposed about an upper outer surface of said housing and having a sleeve port disposed therethrough; a housing port disposed through said housing and communicated with said upper portion of said return passage, said housing port being arranged to be in registry with said sleeve port when weight is set down on said setting device and said return valve sleeve is in a lower position relative to said housing; and seal means, disposed between said housing and said return valve sleeve, for isolating said housing port from said sleeve port when a tension load is placed across said setting device and said valve sleeve is in an upper position position relative to said housing; hydraulic setting piston means, operatively associated with said housing and communicated with said supply passage, for setting a liner hanger of said gravel packing system in response to a first increase in fluid pressure in said supply passage to a first valve; hydraulically actuated supply valve means, operatively associated with said housing, for communicating said gravel packing port with said supply passage in response to a second increase in fluid pressure in said supply passage to a second value greater than said first valve, said supply valve means including: a sliding supply valve sleeve having an open central passageway extending therethrough and open at both a lower and upper end of said sleeve, said passageway communicating with said slurry supply passage and having a ball receiving seat means, defined on the upper end thereof; a closure ball adpated for seating on said ball receiving seat means of said sliding supply valve sleeve, said closure ball for use in closing said open central passageway of said sliding supply valve sleeve and to allow said sleeve to be forced downward relative to said housing in response to said second increase in fluid pressure in said supply passage; a retaining cage disposed in a portion of said housing for retaining said closure ball within said housing; releasable retaining means, operatively associated with said supply valve sleeve and said housing, for initially retaining said supply valve sleeve in a closed position blocking said gravel packing port; and locking means, operatively associated with said supply valve sleeve and said housing, for locking said supply valve sleeve in its said open position; and check valve means, disposed in a lower portion of said housing below said supply valve means, for permitting flow of return fluid upward therethrough, for permitting downward flow therethrough, and for directing reverse circulation fluid up through said open central passageway of said supply valve sleeve and up through said slurry supply passage to remove excess slurry from said setting device.
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이 특허를 인용한 특허 (11)
Hendrickson James D. (Carrollton TX) O\Neal Dean S. (Lafayette LA) Guillot Sidney J. (St. Martinville LA) Finley Ronnie D. (New Iberia LA), Abrasive slurry delivery apparatus and methods of using same.
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