Patent application number | Description | Published |
20080236835 | Hydraulically Operated Protector For Downhole Devices - It is provided a tool and its operating procedure, to protect any device while lowering into a well, and especially hydraulic devices such as sensors with expandable arms or inflatable elements such as packers. The protection is mainly important in the open hole of highly deviated or horizontal wells, for any device equipped with external seal element, delicate sensor or articulated parts. This tool features an automatic sequence controlled by a single dart or a single ball launched into the running string from the surface: when the dart or the ball lands on its seat, the pressure build-up is initially applied to a piston to extract the device from the protector without exposing it to any differential pressure, then it is automatically applied to the device itself for actuation as soon as the device is entirely pulled out of the protector. | 10-02-2008 |
20090032257 | Method and Apparatus for Consolidating a Wellbore - This invention relates to a method and to a tool to consolidate a wellbore by displacing conventional cement slurry or any other settable fluid, without any permanent casing. A bladder is inflated inside the bore to act as a mold and to form an annulus that can be filled by cement slurry or any other settable fluid. When the cement or the resin is set, the form is retrieved by straight pull; leaving a cement or resin sheath to support the formation without requiring any re-dulling. The sheath can be perforated if necessary (in the producing zone). Applications include without limitations temporary cementation of mono-diameter wells, through-tubing repair of an open hole, or cementation of a slotted liner in water, oil or gas wells | 02-05-2009 |
20090183875 | Method and Apparatus to Set a Plug - The invention provides an apparatus to be lowered in a borehole, comprising: (i) a delivery section for delivering a plugging fluid; (ii) a setting section comprising a longitudinal element and a flexible and permeable sleeve into which the plugging fluid is delivered; and (iii) a disconnect mechanism to allow the delivery section to be disconnected from the setting section, characterized in that the flexible sleeve is connected by at least one floating means to the longitudinal element. Additionally, the invention provides a method of installing a plug in a borehole, comprising: positioning the apparatus as described above in the borehole at a position at which the plug is to be installed, pumping fluid into the flexible sleeve via the delivery section so as to inflate the flexible sleeve, disconnecting the setting section from the delivery section, pumping an excess of the fluid into the borehole above the plug and withdrawing the delivery section from the borehole leaving the setting section at the position, said setting section acting as the plug. | 07-23-2009 |
20090260817 | Method and Apparatus to Cement A Perforated Casing - A method of and an apparatus for treating a near zone and/or a far zone of a well is disclosed. The method comprises the following steps. (1) A tube that is permeable to a material is placed inside a wellbore, forming an annulus inside the wellbore. (2) A setting section surrounded by a sleeve is placed inside the tube. The sleeve is expandable and impermeable to the material. (3) The sleeve is inflated so that the sleeve is in contact with the tube, ensuring for a first zone of the tube is impermeable to the material, but leaving a second zone permeable to the material. (4) A treatment fluid is pumped to the zones that passes through the second zone still permeable to the material. (5) The near zone in the annulus and/or the far zone in the surrounding formation is treated with the treatment fluid. | 10-22-2009 |
20090294133 | Injection Apparatus and Method - The invention relates to an injection apparatus for injecting a chemical additive into a fluid mixture flowing in a well-bore. The invention also relates to a corresponding injection method. A particular application of the invention relates to the oilfield industry, for example in cementing operation | 12-03-2009 |
20100025036 | Method and Apparatus for Selective Treatment of a Perforated Casing - A clean version of the revised Abstract is shown below for the Examiner's convenience. | 02-04-2010 |
20100165788 | ACOUSTIC TRANSCEIVER ASSEMBLY WITH BLOCKING ELEMENT - An acoustic transceiver assembly including a housing, an oscillator, and a blocking element. The housing has at least one inner wall defining a cavity. The cavity has a first end and a second end defining an axis of said acoustic transceiver assembly. The oscillator is provided in said cavity. The oscillator is provided with a transducer element, and a backing mass positioned adjacent to the transducer element. A blocking element is positioned inside the cavity and adjacent to the oscillator. The blocking element is adapted to restrain a portion of said backing mass at a first pressure to thereby restrain the backing mass from lateral movement relative to the axis of the acoustic transceiver assembly. The blocking element is also adapted to release the backing mass at a second pressure. | 07-01-2010 |
20100230101 | METHOD AND APPARATUS TO CEMENT A PERFORATED CASING - The invention discloses an apparatus ( | 09-16-2010 |
20110149687 | ACOUSTIC TRANSCEIVER WITH ADJACENT MASS GUIDED BY MEMBRANES - An acoustic transceiver assembly including a housing, an oscillator, and at least one membrane. The housing has at least one inner wall defining a cavity. The housing also has a first end and a second end defining an axis of the acoustic transceiver assembly. The oscillator is provided in the cavity. The oscillator is provided with a transducer element, and a backing mass acoustically coupled to the transducer element. The at least one membrane extends outward from the backing mass to support at least the backing mass within the cavity. The at least one membrane is flexible in an axial direction parallel to the axis of the acoustic transceiver assembly to permit the backing mass to oscillate in the axial direction, and rigid in a transverse direction to restrict lateral movement of the backing mass relative to the housing. | 06-23-2011 |