Disposable pressure transducer for use with a catheter

A disposable blood pressure transducer system for use with a catheter with or without a catheter flush/flow valve. The transducer housing has both electrical and fluid connections, with the electrical connections being protected from contamination by fluid.

Catheter patency flush flow controller

Abtract of the Disclosure . Catheter patency flow-flush controller com-prising push-button valve mechanism with fast flow flush path surrounding the valve member, normally closed by a valve element and valve seat interposed between the inlet and outlet of the internal passageway of the controller by a coil spring located external of the internal pas-sageway, the coil spring also compressively retaining a resilient seal at all times about the entry way through which the valve plunger enters the controller internal passageway. Preferably, the valve member push-button actuator includes a top cap member with dependent skirt which serves also as an alignment guide during valve movement by sliding engagement with an upwardly open skirt associated with the controller housing. Other features of the invention are also disclosed and claimed.

Single horizontal wellbore gravity drainage assisted steam flooding process and apparatus

Disclosed is a gravity drainage assisted steam flooding process for the recovery of oil from thin viscous heavy oil reservoirs using a single horizontal wellbore. Steam is injected through a fully or partially insulated tubing to exit at or near the toe of a long horizontal well penetrating a viscous oil reservoir. Initially, low (10 - 30 %) quality steam is circulated along the well to condition the wellbore and increase the heated radius to about 1 or 2 metres. Oil and reservoir fluids immediately adjacent to the wellbore are produced through the annular space between the insulated tubing string and a slotted liner that surrounds it. After the period of low quality steam circulation, the production outlet is shut in or constrained and steam injection is continued to initiate an active steam chamber zone along a portion of the wellbore. Subsequently, fluid withdrawal is resumed at the production outlet, while the annular liquid level in the vertical section is controlled to maintain a nearly constant pressure at the production outlet. The injection of a higher (50 - 70 % or more) quality steam is continued at a rate similar to or higher than the initial rate to cause the expansion and propagation of the active steam heated volume vertically towards the top of the formation, longitudinally along the horizontal well from the toe towards its heel, and laterally away from the well towards the inter-well boundary with the next row of horizontal well. As steam flows into the reservoir under both gravitational countercurrent flow and pressure drive, the oil, steam condensate and reservoir fluids heated both conductively and convectively drain towards the slotted liner annulus of the horizontal wellbore and are then pumped to the surface.

Apparatus for applying flock to a substrate

A flocking system including a cabinet supporting a substrate to be flocked and a flock tray, means for raising and lowering the flock tray into and out of contact with the substrate (such as a garment), and means for sealing the moving flock tray to the cabinet to prevent flock from getting into the cabinet to prevent contamination of the mechanics of the internal portion of the cabinet by flock. The flock tray includes a slowly rotating rotor for keeping the flock agitated, a telescoping shaft connecting the rotor to the motor, a flock tray holder for maintaining the seal with the cabinet, and a flock tray cover with one or more flocking masks with various size openings.

Improved instrument marker pen

A recorder instrument marker pen of the type adapted for high speed printing, provided with a self-damping resilient shock absorbing member (16) for holding the writing tip. The shock absorbing member (16), typically elastomeric, is positioned adjacent the writing tip portion (14) of the marker to provide for a substantially constant pressure on the writing tip, to reduce pen skipping, increase writing tip life, and provide for a consistent mark upon the desired substrate. The shock absorbing member (16) is substantially self-damping in that vibration or the like associated with high speed writing, is quickly dissipated without undue oscillatory motion. The self-damping, resilient, shock absorbing member (16) is preferably utilised in conjunction with ballpoint or extruded plastics nib type writing elements.

Catheter patency flush flow controller

Abtract of the Disclosure Catheter patency flow-flush controller com-prising push-button valve mechanism with fast flow flush path surrounding the valve member, normally closed by a valve element and valve seat interposed between the inlet and outlet of the internal passageway of the controller by a coil spring located external of the internal pas-sageway, the coil spring also compressively retaining a resilient seal at all times about the entry way through which the valve plunger enters the controller internal passageway. Preferably, the valve member push-button actuator includes a top cap member with dependent skirt which serves also as an alignment guide during valve movement by sliding engagement with an upwardly open skirt associated with the controller housing. Other features of the invention are also disclosed and claimed.

Single horizontal wellbore gravity drainage assisted steam flood process and apparatus

Heavy oil may exist as unconsolidated deposits in thin zones, sometimes underlain by bottom water, which deposits flow under solution-gas drive primary recovery mechanisms, resulting in rapid reduction in reservoir pressure and recovery of quantities of sand with oil. A gravity-drainage assisted steam flooding process for recovery from thin viscous reservoirs uses a single horizontal wellbore. Steam is injected through tubing penetrating the reservoir to condition and heat the wellbore producing oil and reservoir fluids. After a period of steam circulation, production is constrained and steam injection is continued to initiate an active steam chamber. Fluid withdrawal is resumed while pressure is maintained. Steam injection is continued to cause the expansion and propagation of the active steam heated volume. As steam flows into the reservoir under gravitational counter current flow and pressure drive, heated oil, steam condensate and reservoir fluids drain and are pumped to the surface.

Selective clutch and brake structure for washing machine drive