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Search Petrowiki: Packer elements
...Glossary:Packer elements Elastomer seals on a ...
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...isclaims any and all liability for your use of such content. More information Elastomer seals on a packer...
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... the top of the liner comes up inside the upper casing string. Also, LAP stands for leakage across packer elements...
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...he top of the liner comes up inside the upper casing string. Also, LAP stands for leakage across packer elements...
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...ossary:P * Glossary:P inj * Glossary:P wave * Glossary:P/z plot * Glossary:Pack-off * Glossary:Packer * Glossary:...Packer bore receptacle * Glossary:...Packer elements * Glossary:...
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...nd the drill pipe. The rotating control-head system consists of a pressure-containing housing where packer elements are supported between roller bearings and isolated by mechanical seals. Types of rotating diverter...
Selecting surface equipment is the final step in designing an underbalanced drilling (UBD) operation. The surface equipment for UBD can be broken down into four categories: * Drilling system * Gas-generation equipment * Well-control equipment * Surface separation equipment. Hole size and reservoir penetration, as well as directional trajectory, determine whethercoiled tubing or jointed pipe is the optimal drillstring medium (Table 1). If the hole size required is larger than 6โ in., jointed pipe may need to be used. The size of coiled tubing currently used for drilling operations is between 2 and 2โ in. Occasionally, the ideal coiled tubing for an operation may be excluded because of such factors as crane or transport limitations or that the life of the coil may not be economical.
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...* 2.2.1 Examples of Fluoroelastomers * 3 Packing Element * 3.1 Packing element system design * 4 Packer-to-Tubing Seal Stacks * 4.1 Bonded packing unit * 4.2 Chevron packing unit * 4.3 Effects of seal...tch almost any downhole condition. Care must be taken to ensure that the elastomer selected for the packer and seal assembly meets all the downhole conditions to which it will be subjected. Things that must...tion packers is nitrile. Nitrile is used in low- to medium-temperature applications for packers and packer-to-tubing seal assemblies in one form or another. It shows good chemical resistance to oils, brines...
Elastomers are rubber or plastic materials used as a seal. They are commonly used inpackers. There are many suitable elastomers on today's market to match almost any downhole condition. Care must be taken to ensure that the elastomer selected for the packer and seal assembly meets all the downhole conditions to which it will be subjected. Things that must be considered are: * Downhole operating temperature * Exposure to produced or injected fluids and gases * Exposure to completion fluids such as oil-based mud, brine, bromides, high pH completion fluids, and amine base inhibitors * Exposure to solvents such as xylene, toluene, and methanol.
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...ipment, it can compromise the ability of intelligent well equipment to do its job. Erosion of choke elements, seal surfaces, control lines, and interference with device movement can render the intelligent com...lls * 2 Sand control in intelligent wells * 2.1 Dip tube or siphon tube solution * 2.2 Isolation packer, sleeve, and an internal control valve system (ICV) * 2.3 Expandable screens * 3 References * 4 ...represent the nervous and circulatory system of an intelligent-well completion, and damage to these elements may mean partial or total loss of the functionality of the intelligent completion. These ...
The challenge of applying downhole flow control to poorly consolidated, high-permeability, high-productivity, clastic reservoirs is their propensity to produce significant amounts of formation solids. While sand can be a problem for most downhole equipment, it can compromise the ability of intelligent well equipment to do its job. Erosion of choke elements, seal surfaces, control lines, and interference with device movement can render the intelligent completion inoperable, thus losing its functionality and the ability of the operator to use the equipment to realize its long-term value. Sand-control techniques have been applied in these environments with varying degrees of success, and it is safe to say that a properly conceived and executed sand-control strategy can be very effective in reducing or eliminating solid production without unduly restricting productivity. New techniques, such as expandable screens, have been added to tried-and-true techniques such as gravel packs.
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...Packers The packer (more accurately described as the 'upper completion production ...packer') is a key piece of downhole equipment in many completions - a sealing device that isolates and con...ually part of the well's primary well barrier, protecting the casing and creating an A-annulus. The packer is essential to the basic functioning of most wells, injectors or producers. Alternatives to using ...
The packer (more accurately described as the'upper completion production packer') is a key piece of downhole equipment in many completions - a sealing device that isolates and contains produced fluids and pressures within the tubing string; it is a well barrier element, usually part of the well's primary well barrier, protecting the casing and creating an A-annulus. The packer is essential to the basic functioning of most wells, injectors or producers. Alternatives to using a production packer include a dynamic seal assembly, a cemented completion and a packerless completion. Advantages and application * 4.3 Retrievable tension/compression set--versatile landing * 4.4 Retrievable hydraulic-set single-string packer * 4.4.1 Retrieval * 4.5 Dual-string packers * 4.6 Permanent and retrievable sealbore packers * 5 Methods of conveyance * 5.1 Landing conditions * 5.2 Through-tubing operations * 5.3 Casing cleanup operations * 5.4 Other casing considerations * 6 Packer rating envelopes * 6.1 Rating envelope * 7 References * 8 Noteworthy papers in OnePetro * 9 External links * 10 General references * 11 See also * 12 Category In addition to providing a seal between the tubing and casing, other aspects of a packer are as follows: * Prevent downhole movement of the tubing string, generating considerable axial tension or compression loads on the tubing string. Packers have four key features: * Slip * Cone * Packing-element system * Body or mandrel. The slip is a wedge-shaped device with wickers (or teeth) on its face, which penetrate and grip the casing wall when the packer is set. The cone is beveled to match the back of the slip and forms a ramp that drives the slip outward and into the casing wall when setting force is applied to the packer. Once the slips have anchored into the casing wall, additional applied setting force energizes the packing-element system and creates a seal between the packer body and the inside diameter of the casing. Production packers can be classified into two groups: * Retrievable * Permanent. Permanent packers can be removed from the wellbore only by milling.
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