Arrow oil tools wellhead

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Ennovative Online Store. A wellhead for those looking for sensitive flow adjustment capability and a lower cost assembly.

Conical valve design provides more adjustment positions for greater control. Built-in gas flow measurement and quick connect ports for sampling and temperature measurement. Better control over a wider flow range with proprietary valve design. Request a quote. Find a distributor.

Product Description. Key Specifications. Precision Accu-Flo Wellhead Downloads. Product Data Sheets. Geothermal Wellhead Systems Fluid control systems for geothermal wells Enhance efficiency in thermally enhanced steam injection recovery, waste disposal, and hot-water wells. Shallow-Water Systems Systems designed for shallow-water operations Save time compared with conventional systems and reduce exposure to hazardous operations.

Connectors Peruse our selection of wellhead and casing connectors. SimpleGrip Weldless surface casing connection system Simplify wellhead installation without welding or special tooling.

FastLock Quick wellhead connector Meet the needs of drilling and production with regard to handling safety and makeup time. FastClamp Conventional API ring gasket wellhead connector Install safer, faster, and easier with fewer personnel and less force compared with conventional clamps. FlangeLock Low-torque wellhead connector Combine the fast makeup and low-torque requirement of FastLock connectors with the inherent low cost of flange connections.

SlipLock Slip-type casing connection system Use as an alternative to conventional weld-on or threaded casing connections. Related Information View All. Brochure Drilling Courses Overview Pressure control and drilling equipment course offering.

Product Sheet Wellhead Isolation Tool Protect production equipment from high pressures and abrasive fluids. Share This. Further features and advantages of the present invention will become apparent from the following detailed description, taken in combination with the appended drawings, in which:.

It will be noted that throughout the appended drawings, like features are identified by like reference numerals. The invention provides a casing-engaging well tree isolation tool that permits wellbores equipped with low pressure wellhead equipment to be stimulated at high fluid pressures without danger of exceeding a tensile or holding strength of any one of the wellhead components.

The well tree isolation tool in accordance with the invention includes a mandrel stroked through the wellhead. A bottom end of the mandrel carries a releasable packer assembly that transfers lift pressure induced by high pressure well stimulation fluids directly to a casing of the well.

The wellhead isolation tool 10 includes a high pressure mandrel 12 having a box-threaded bottom end 14 to which a releasable pack-off assembly 16 FIG. The releasable pack off assembly 16 transfers to the casing lift pressures induced by high pressure stimulation fluids injected into the well, as will be explained below in more detail. A top end of the mandrel 12 is threadedly connected to a mandrel adaptor O-rings 20 provide a fluid seal between a smooth outer surface of a top end of the mandrel 12 and a sealed bore 22 in the mandrel adaptor The mandrel adaptor 18 includes a top flange 24 to which a flow control mechanism, such as a high pressure valve 30 is mounted.

The mandrel adaptor 18 further includes an annular shoulder 26 on a bottom end thereof. The annular shoulder 26 rotatably supports a mandrel adaptor lockdown nut 28 used to secure the mandrel adaptor to a top of a sealed chamber 32 through which the mandrel 12 is stroked.

The sealed chamber 32 permits a releasable packer assembly 16 shown in FIG. The sealed chamber 32 includes a first cylinder 34 that is connected to a wellhead of a well to be stimulated, as will be explained below in detail, and a second cylinder 36 that reciprocates over an outer surface of the first cylinder 34 within limits defined by travel stops The first cylinder 34 has an outer surface that includes a spiral pin thread 40 on a lower region thereof and a recessed smooth cylinder wall 42 on an upper region thereof.

The second cylinder 36 has a smooth inner wall 44 , and a high pressure fluid seal 46 captured between the smooth cylindrical wall 42 of the first cylinder and the smooth inner wall 44 of the second cylinder provides a high pressure fluid seal between the first and second cylinders 34 , The high pressure seal 46 is retained in position by a packing nut 48 in a manner well known in the art. A hollow lock flange 50 has a box thread that engages the pin thread 40 on the lower region of the first cylinder The lock flange 50 is used to lock the releasable packer assembly 16 shown in FIG.

The lock flange 50 has a pin thread 52 on an outer diameter of a top end thereof. The pin thread 52 is engaged by a box thread 54 of a lock down nut 56 supported on an annular shoulder 58 of a bottom end of the second cylinder A top end of the second cylinder 32 flares outwardly and has a pin-threaded outer surface that is engaged by box thread 62 of a lock down nut 64 used to lock an interchangeable seal adaptor 66 to a top of the second cylinder.

A high pressure fluid seal is provided between the second cylinder 36 and the interchangeable seal adaptor 66 by a metal ring gasket for a threaded union 68 and a pair of 0 -rings 70 , as described in Applicant's Co-pending patent application Ser.

The interchangeable seal adaptor 66 provides a fluid seal around the periphery of the mandrel The fluid seal is provided by, for example, a chevron packing 72 retained in a packing cavity 74 by a packing nut 76 , in a manner well know in the art. As will be understood by those skilled in the art, the mandrel adaptor 18 and the interchangeable seal adaptor 66 permit the tool to be readily and quickly adapted to an appropriately sized mandrel Since both the mandrel adaptor 18 and the interchangeable seal adaptor 16 are secured to the top of the second cylinder 36 by threaded unions lockdown nuts 28 and 64 they are readily exchanged, as required to accommodate a different size of mandrel Consequently, prior to performing a well stimulation procedure a mandrel 12 having a diameter best suited to a diameter of the casing is selected.

A corresponding mandrel adaptor 18 is also selected, along with a corresponding interchangeable seal adaptor The interchangeable seal adaptor 66 is mounted to the top of the second cylinder 36 and the mandrel 12 is inserted through the high-pressure packing 74 in the top of the interchangeable seal adaptor A top end of the mandrel 12 is then connected to a bottom end of the mandrel adaptor 18 and the tool is ready for service. During use, the mandrel 12 and of the well isolation tool 10 in accordance with the invention is inserted into a casing or a production tubing of the well and withdrawn from the well by an insertion tool In the illustrated embodiment, the insertion tool 80 includes a pair of hydraulic cylinders 82 supported on their cylinder rods ends 84 by support brackets 86 that are removably affixed to opposed upper support arms 88 connected to a mandrel insertion adaptor The mandrel insertion adaptor 90 is connected to a top of the high pressure valve 30 by a threaded union A top end of the mandrel insertion adaptor includes a bowen union 94 to which a plug or other flow control component can be connected in a manner well known in the art.

The cylinder ends 96 of the hydraulic cylinders 82 are removably connected to lower support arms 98 affixed to opposed sides of a bottom end of the first cylinder Quick-release straddle brackets can be quickly released to remove the insertion tool 80 from the wellhead isolation tool 10 , as will be explained below in more detail.

The wellhead isolation tool is mounted to the wellhead using an adaptor pin and a lock nut , as shown in FIG. In order to mount the wellhead isolation tool 10 to the wellhead , the adaptor pin is first screwed into a top of the wellhead and the lock nut is threaded over the adaptor pin Wellhead isolation tool 10 is then lowered over a top of the adaptor pin and rotated to threadely secure the wellhead isolation tool 10 to the adaptor pin