Abstract: A method for riserless intervention of a subsea well includes: lowering a pressure control assembly (PCA) from a vessel to a subsea production tree; fastening the PCA to the tree; deploying a plug running tool (PRT) into the PCA, wherein the PRT comprises a latch, an anchor, and a stroker; engaging the latch with a plug of the tree; engaging the anchor with the PCA; and operating the stroker to pull the latch and the plug from the tree.

Abstract: A well pump device is introduced into a well and connects to a wireline to receive electrical energy from the surface. An electrically driven feed pump connects to and delivers driving fluid to the driving side of an ejector. A hydraulic apparatus uses the well pump device as a pulling tool.

Abstract: A method and device for displacement of a first fluid by means of a second fluid in a borehole (1) in the ground, where, during displacement, the second fluid is kept separate from the first fluid, and where the volume of an expandable space (22) in which the second fluid is to be located following the displacement, increases during inflow of the second fluid.

Abstract: A method and device for displacement of a first fluid by means of a second fluid in a borehole (1) in the ground, where, during displacement, the second fluid is kept separate from the first fluid, and where the volume of an expandable space (22) in which the second fluid is to be located following the displacement, increases during inflow of the second fluid.

Abstract: A well pump device (1) for introduction in a well (8) by use of a wireline (6), comprising en electrically driven feed pump (2), where the feed pump (2) is connected to the driving side of an ejector (4), the well pump (1) being connected to a hydraulic apparatus (18, 20, 26, 28, 30).

Abstract: A new wellbore apparatus has been invented which, in certain aspects, has anchor apparatus for anchoring the wellbore apparatus in a bore, the anchor apparatus actuated by fluid under pressure supplied thereto, and sealing apparatus selectively inflatable to close off the bore to fluid flow therethrough, and temperature compensating apparatus for maintaining a desired fluid pressure in the sealing apparatus to prevent it from bursting or deflating.

Abstract: A sand removing apparatus which is intended to be used in the lower area of underwater wells and is suspended from the end of a pipe string, includes a container having a closeable inlet for allowing a flow of liquid accompanied by sand thereinto. The container has a separate outlet assigned a suction side of a pump constituting the drive device for the apparatus. The drive device is kept going until a degree of filling of the container has been achieved. Between a separate inlet provided with a one-way valve and the separate outlet, a filter is disposed, so that sand remains in the container while the carrier liquid exits the container. In one embodiment, the drive device is a liquid-driven jet jump.

Abstract: A sealing apparatus for use in a well in connection with oil or gas production includes a seal and a pressure compensator. The seal is an inflatable, balloon-type well seal. The seal has a first cavity and is bears against an inner surface of a tubular surface. The pressure compensator is associated with the seal and includes a cylinder having a second cavity. The second cavity is in fluid communication with the first cavity. The cylinder has a reciprocatingly slidable piston positioned therein. The piston has first and second piston surfaces of different areas at opposite sides of the piston. The first piston surface is exposed to a first pressure value within the first cavity and the second piston surface is exposed to a second pressure value within the well.