Abstract: A hollow body is provided with a seal by which it may be sealed within a nipple profile included in a tubing string. The body allows a wireline to be passed through it while maintaining a substantial seal. During running-in lower collet fingers engage a stop ring mounted on the body. When the plug becomes seated in the nipple profile by the weight of a logging tool also suspended on the wireline, fingers are disengaged by inward movement of external collet fingers and rollers. Consequent downward movement of the fingers allows the rope socket to push them outwardly and allows the logging tool to be lowered. An equalizing sleeve can be pulled up by the socket head from the sealing position to a raised position which allows pressure equalization above and below the plug to facilitate withdrawal thereof. Profiles on the fingers act to trap the socket head should the wireline pull out or break.
June 5, 1995
Date of Patent:
December 3, 1996
Phoenix Petroleum Services Ltd.
John L. Schneider, Hugo M. Barcia, Bruce C. Robinson
Abstract: A downhole instrumentation system comprises one or more transducers coupled in a DC current circuit between the star point of an electrical submersible pump and the chassis. A sensing circuit including a DC power supply and an ammeter is arranged to monitor the current drawn. The system includes active electronic components which provide a sequence of signals that may include reference and measuring signals or multiplexed signals from the transducers.
Abstract: An electrical adapter includes a housing block made of electrically insulating material and a pair of spaced, parallel, electrically conducting blade terminals embedded in the housing block. The first ends of the blade terminals engage contact elements in an automotive fuse block or panel and the second ends, which are either freely accessible within, or extend from, the housing block, engage the electrical connectors of an auxiliary device.
Abstract: The belt for protecting the lower spinal region of a wearer from injury by impact or abrasion when engaging in a hazardous activity, such as motocross, is provided with sets of male press studs and/or touch and close fasteners. Cooperating sets of female studs and/or touch and close fasteners are provided on the inner waistband of trousers to enable the belt and the trousers to be secured together in a variety of different relative vertical positions to suit the body shape of the wearer.
Abstract: The clamp mounts a cable and service lines in spaced relationship to a tubing string used in producing a well, and formed of lengths of tubing joined by a coupling. The clamp comprises first and second clamping elements for clamping around the tubing string and hinged on a first pin. A cover is hinged to the first element by a second pin. The first element and the inner surface of the cover are provided with formations which ensure that the cable and service lines are firmly held when the cover is closed against the first element by a captive bolt, which also clamps the first and second elements firmly around the coupling. A single hinge pin version clamps to the tubing string on each side of a coupling.
Abstract: An electronic component is conditioned to remove distortion in a temperature response characteristic due to a temperature hysteresis effect, by subjecting the component to a controlled temperature variation prior to operation of the component at a given temperature. A circuit is disclosed wherein the component is a zener reference element and a bias voltage of cyclical waveform and of reducing magnitude is applied to a control transistor to cause corresponding variation of the temperature of the zener via an on-chip heater. The zener is subsequently operated at a normal bias voltage corresponding to the mean value of the cyclic waveform.
Abstract: An electrical adapter that includes an electrically insulated housing from which the first ends of a pair of parallel blade terminals extend to engage the contact element in a fuse block or panel in a motor vehicle where both of the parallel blade terminals are unrelated and don't come in contact with each other and were in both of the blade terminals includes a second end that is freely accessible either within, or which extend from, the housing remote from the first end thereof to permit an electrical connector of an auxiliary device to be selectively engagable therewith.
Abstract: In order to cool food in a display compartment, a cold air stream is generated by refrigeration means, preferably a fan, an evaporator and a condenser, and is passed through the display compartment from its inlet to its outlet. The air temperatures at the inlet and outlet may be sensed by sensors in which case control means are responsive to a signal from the output of both the sensors and control the operation of the refrigeration means to maintain the air temperature in the display compartment within a narrow predetermined range.
Abstract: Sensing apparatus for monitoring fluid intake and discharge pressure in an oil well comprises an intake pressure transducer mounted at the bottom of an ESP pump string and arranged to sense intake pressure directly and a similarly mounted discharge pressure transducer. A capillary tube is connected at its lower end to the transducer and indirectly at its upper end to a fluid reservoir located in the area of discharge pressure. Valves in the form of alternative nipples are arranged to apply intake or discharge pressure to the fluid reservoir through a port in the wall of the by-pass string. While discharge pressure is normally monitored via the capillary tube, the intake pressure can be monitored in the event of breakdown of the discharge pressure transducer, thus providing redundancy to the system; also the ability to sense intake pressure at two different points enables the system to be calibrated.
Abstract: A pressure-actuated head for detonating a gun for perforating a well bore is suspended on a tubing string for lowering down the well. The head includes a detonator pin biased towards a detonator but restrained until detonation is required. Detonation is effected by causing or allowing a pressure differential to develop across a piston. Fluid communication between chambers on respective sides of the piston is via a pressure control system which allows the pressure differential to develop over a period of time.
March 30, 1992
Date of Patent:
December 1, 1992
Phoenix Petroleum Services Ltd.
John L. Schneider, Hugo M. Barcia, Bruce Robinson, Leslie E. Jordan
Abstract: A logging plug for suspension on a wireline comprises a hollow body provided with packers for sealing it to a nipple included in a tubing string, and a flow tube through which the line may slide with minimal leakage. A sliding equalizing tube in the lower position shown blocks communication across the packers. When moved upwards by striking it with a hammer or logging tool, communication is allowed via ports in the equalizing tube and in the hollow body, the annular passage around the wireline and an axial bore in the lower part of the hollow body. Any pressure differential across the packers is thus equalized, allowing the logging plug to be easily withdrawn.
Abstract: A cylindrical sponge tampon, soaked in water and then placed in the vagina, supports the urethra to prevent leakage during active movement. The sponge tampon is typically 34 mm in diameter and 60 mm in length when wet and supports a minimum of 0.28 kg (0.5 lb) weight when squashed to half its diameter and not greater than 4.54 kg (10 lbs) per 60 mm length. The preferred material is a formalized polyvinyl alcohol sponge which is a medically proven material.
Abstract: A cantilever racking system comprises vertical pillars formed of two metal sections of steel strip rolled to a cross-section comprising a central web portion bounded by two channel portions. The web portions are secured in facing relationship so that the juxtaposed channel portions form T-shaped slots having inturned marginal edges. Cantilever arms may be clamped in place against the end surfaces defined by channel portions for example by bolts engaging captive nuts engaging with the inturned edges of the metal strips.
Abstract: A detonating head assembly (30) for detonating perforating guns in an oil, gas or water well, comprises a retrievable detonating head (34), a landing sleeve (50) and a stinger (42). The detonating head (34) comprises a plunger assembly (36) slidably receivable within the sleeve (50) and including a plunger (64) releasable retaining at its lower end a piston (94) reciprocable within a housing (92), the piston (94) when released being actuable by hydrostatic pressure to detonate a detonating assembly (40), and latching dogs (58) co-operating with a recess (56) and with formations on the plunger (64) such that in a first, insertion position the detonating head (34) may be inserted into the sleeve (50), until the dogs (58) engage in the recess.
Abstract: Although fenclofenac (2-(2,4-dichloro-phenoxy) phenyl acetic acid) is known as an NSAID it has now been shown to have immunosuppressive properties indicating its usefulness in the treatment of a wide variety of conditions requiring immunosuppressive therapy. In this role fenclofenac may be combined with a prostaglandin and/or another immunosuppressive drug, and may be administered in a form for release in the terminal ileum or colon.
Abstract: A downhole pump and perforating gun are run simultaneously down a well on a tubing string and the gun is fired under underbalanced conditions. A slip joint reduces vertical mechanical shock transmitted through the tubing string to the pump on firing; centralizers minimize whiplash vibration and a lateral shock absorber absorbs radial shock.
Abstract: A one-piece blank of thin semi-rigid material, such as cardboard, formed into a series of rectangular panels hingedly connected at parallel foldlines and two trapezoidal pairs of interlocking flaps, may be easily assembled to form a foldable binocular. One panel contains a pair of objective lenses and another panel contains a pair of ocular lenses. When folded, the objective lenses, and optionally the ocular lenses, are protected from scratches and smudges by a pair of rectangular flaps formed by glueing certain panels together before assembly.
Abstract: The device comprises a basin having a wall with a U-shaped indentation for reception of a user's neck. A series of independently adjustable ducts, each of which incorporates several jet heads, each jet head having a number of nozzles arranged to direct streams of water radially inwards, are mounted on the basin. The ducts are connected to a common water inlet manifold and are adjustable to selected stationary positions such that the whole of the user's hair can be simultaneously rinsed. The jet heads are preferably linearly and/or rotationally adjustable with respect to the ducts. Rinsing water is caused to accumulate in a pool at the bottom of the basin by a weir running across the floor and preferably incorporating a narrow gap to provide controlled out-flow of water. The ducts may also be adapted to fit within a conventional backwash basin by means of suitable bracket means.
Abstract: The containers have screw threads on their lower extremities which mate with corresponding screw-threaded elements integral with a rigid bottom of the travel case. These elememts may be projections or indented receptacles. The containers may be screwed to each other when removed from the case.