摘要:
An obturator for actuating a downhole tool having a central bore. The obturator comprising a body of a size and shape to pass through the central bore of the tool and an engagement member releasably attached to the exterior of the tool body, the engagement member being of a size and shape to engage and actuate the tool.
摘要:
The present invention relates to a downhole valve system (1) for controlling inflow of a fluid from and to a formation, comprising a casing (2) having an inner surface, an outer diameter and an inner diameter, and a cross section defined by the inner diameter, the casing comprising a plurality of valves (4, 4a, 4b, 4c) arranged spaced apart from each other for controlling the inflow of the fluid from the formation through the casing; and a plurality of autonomous operating adjusting devices (5) each controlling one of the plurality of valves, each autonomous operating adjusting device comprising a body (6) having an outer body diameter and having a body cross section; the plurality of autonomous operating adjusting devices being fastened inside the casing in order to allow the fluid to flow between the outer body diameter of the body of the autonomous operating adjusting device and the casing. The present invention furthermore relates to a method for controlling an inflow of fluid by controlling a plurality of valves in a downhole valve system according to the present invention.
摘要:
A valve assembly comprises a hot stab and a complementary connection block. The hot stab and the connection block are each provided with a pressure balanced rotating sleeve. When the hot stab is disconnected from the connection block, the rotating sleeve is in a closed position and fluid is not allowed to flow through the :hot stab. The rotating sleeve of the connection block is also in a closed position such that fluid is not allowed to flow through the connection block. The hot stab may be connected and disconnected to the connection block without reducing the fluid pressure.
摘要:
The present invention relates to a downhole flow device 1 for controlling a flow of fluid between an annulus 20 and an inner bore 4 of a well tubular metal structure 3 arranged in a borehole. The downhole flow device comprises a tubular part 5 comprising a number of openings 6 and an axial extension, and a sliding sleeve 7 configured to slide within the tubular part 5 between a first position covering the opening 6 and a number of positions uncovering the opening 6 incrementally, the tubular part 5 comprising an arrangement of grooves 9, the first groove being arranged at a first distance from the second groove along the axial extension, and the sliding sleeve 7 comprising a projecting part 10 configured to engage the first groove in the first position and the second groove in the second position, wherein the tubular part comprises a third groove configured to be engaged by the projecting part 10 and having a second distance to the second groove which is smaller than the first distance.
摘要:
A downhole flow device has a sliding and ported sleeves. A seal has a first component on the sliding sleeve and a second component on the ported sleeve. These components engage one another to seal flow through the ports in the ported sleeve. The components move apart to allow fluid flow through the ports. The components are protected from abrasion and flow by virtue of the seal's structure and how it is opened. The sliding sleeve moves hydraulically along an axis of the ported sleeve to reveal successive ports defined along the sleeve's axis. Operation of the device and the seal address both erosion and damage from differential pressure problems. Thus, the seal prevent damage when unloading a differential pressure across it, and abrasive flow does not have the opportunity to impinge on the sealing surfaces to cause erosion.
摘要:
A stimulation tool includes a tubular having a port (114b); a first sleeve member (210b) disposed in the tubular and actuatable by an actuating member (802b) to move from a closed position wherein fluid communication between a bore of the tubular and the port is blocked; and a closure member (206a) disposed in the tubular and actuatable by the actuating member (802b) to a closed position wherein fluid communication through the bore of the tubular is blocked. A method of stimulating multiple zones of a tubular in a wellbore includes moving a sleeve member (210b) in the tubular by receiving an actuating member (802b) in the sleeve member (210b); releasing the actuating member (802b) from the sleeve member (210b); and actuating a closure member (206a) by receiving the released actuating member (802b) in a seat (217a).
摘要:
The present invention relates to a downhole well tubular structure configured to be arranged in a borehole in a formation, comprising a well tubular part having an opening and an inner face, the well tubular part having an axial extension, a first sleeve configured to slide within the well tubular part along at least part of the inner face, the first sleeve having a first end face and a second end face, the first sleeve having a first sleeve groove facing away from the well tubular part, the first sleeve groove of the first sleeve having a first groove face extending radially and facing away from the first end face, and a second groove face inclining away from the first groove face, wherein the well tubular part has a first inclined face facing the first end face of the first sleeve, the first inclined face inclining from the inner face away from the first sleeve, wherein the well tubular part comprises a second inclined face facing the first inclined face, the second inclined face inclining from the inner face away from the first sleeve, and the first sleeve is configured to slide towards the first inclined face while uncovering or covering the opening. The present invention also relates to a downhole system comprising a downhole well tubular structure according to the present invention and to a sleeve operating method for uncovering or covering an opening in the downhole well tubular structure according to the present invention.