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Search Petrowiki: Blank off
...Glossary:Blank off To close in the end...
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...* Glossary:B/D * Glossary:Babbitt * Glossary:Back flow * Glossary:Back flushing * Glossary:Back off * Glossary:Back pressure * Glossary:Back pressure valve * Glossary:Back scuddling * Glossary:Ba...ary:BJ * Glossary:BKB * Glossary:BL * Glossary:Black oil * Glossary:Blaine fineness * Glossary:Blank * Glossary:...Blank off * Glossary:Blanking plug * Glossary:Blast joint * Glossary:Blasting cap * Glossary:Bleed ...
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...th the produced fluids and returns to the surface. In wells where the produced fluid should be kept off the casing wall or where gas venting is desired, the parallel-free installation should be considere...derations for a reverse-flow system for a jet-pump installation are the need to keep produced fluid off the casing, help minimize fluid friction losses, and aid in drillstem testing or unloading of wells...When the downhole pump is unseated, fluids attempting to flow back into the formation wash the ball off the magnet and onto the seat. The standing valve is wireline-retrievable and includes a provision f...
Hydraulic pumping is a proven method of artificial lift -- adding energy to move the fluids to the surface after reservoir pressure is no longer sufficient to do so. The key component of a hydraulic pumping operation is the downhole pump. The two basic types of installations are the "fixed"-pump and the "free"-pump design. In the fixed installation, the downhole pump is attached to the end of a tubing string and run into the well. Free-pump installations are designed to allow the downhole pump to be circulated into and out of the well inside the power-fluid string, or it can also be installed and retrieved by wireline operations.
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...th the produced fluids and returns to the surface. In wells where the produced fluid should be kept off the casing wall or where gas venting is desired, the parallel-free installation should be considere...derations for a reverse-flow system for a jet-pump installation are the need to keep produced fluid off the casing, help minimize fluid friction losses, and aid in drillstem testing or unloading of wells...atio of the nozzle area to the throat area is an important variable because it determines the trade-off between produced head and flow rate.Fig. 14.11 shows a schematic of the working section of a jet pu...
Introduction Hydraulic pumping is a proven artificial-lift method that has been used since the early 1930s. It offers several different systems for handling a variety of well conditions. Successful applications have included setting depths ranging from 500 to 19,000 ft and production rates varying from less than 100 to 20,000 B/D. Surface packages are available using multiplex pumps ranging from 15 to 625 hp. The systems are flexible because the downhole-pumping rate can be regulated over a wide range with fluid controls on the surface. Chemicals to control corrosion, paraffin, and emulsions can be injected downhole with the power fluid, while fresh water can also be injected to dissolve salt deposits. When pumping heavy crudes, the power fluid can serve as an effective diluent to reduce the viscosity of the produced fluids. The power fluid also can be heated for handling heavy or low-pour-point crudes. Hydraulic pumping systems are suitable for wells with deviated or crooked holes ...
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... * 2 Gravel pack base * 3 Seal assembly * 4 Gravel pack screen * 4.1 Screen centralization * 5 Blank pipe * 5.1 ...Blank pipe centralization * 5.2 ...Blank pipe length * 5.3 Tell-tale screens * 6 Shear out safety joint * 7 Knock out isolation valve * ...
A myriad of gravel-pack systems are available to handle virtually any conceivable well condition. Gravel pack completion equipment is the equipment that remains in the well after the gravel placement operations are complete. The equipment discussed does not represent all the types of available equipment, but it does represent a typical gravel pack completion. Certain well conditions may require compromises in the type and design of gravel-pack equipment that can be used. Another important concept is that there may be several, yet equally effective, ways to complete a well.
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...ery drilling area in the world. Some permit procedures are as simple as preparing a few fill-in-the-blank documents, while others may require extensive, time-consuming efforts such as environmental and eco...way from a public access road to the actual drilling site for land wells must be considered. If the off-road distance is small, or through single owner land, the permit may be obtained quite easily. Diff...
Preparing the location to accept the rig is an important cost factor and perhaps the most difficult to quantify. Theauthority for expenditures (AFE) developed for each well must include a reasonable estimate of these costs, despite the uncertainties. This process involve: * Legal costs. Location costs include only those variables actually involved with a rig move-in. These costs do not include lease fees or bidding cost.
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...and deviation. See API Spec. 10D, Specification for Bow-Spring Casing Centralizers. The purpose of blank pipe is to provide a reservoir of gravel-pack sand above the screen to ensure that the screen remai...th viscous gel transport fluids commonly produces voids, particularly opposite the short lengths of blank pipe between screen joints. Depending on deviation angle, pack settling shortly after gravel placem...e of gravel-pack sand available for this process to occur without uncovering the top of the screen. Blank Pipe Centralization. As with the screen, the ...
W.L. Penberthy Jr. (retired, Exxon Production Research Co.), with contributions from Baker Oil Tools Conventional well completions in soft formations (the compressive strength is less than 1,000 psi) commonly produce formation sand or fines with fluids. These formations are usually geologically young (Tertiary age) and shallow, and they have little or no natural cementation. Sand production is unwanted because it can plug wells, erode equipment, and reduce well productivity. It also has no economic value. Nonetheless, formation sand production from wells is dealt with daily on a global basis. In certain producing regions, sand control completions are the dominant type and result in considerable added expense to operations. Fluid flow from wells is the consequence of the wellbore pressure being smaller than that in the reservoir. The drag force caused by the flow from large to small pressure is related to the velocity-viscosity product at any point around the well.
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- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Block 2/4 > Greater Ekofisk Field > Ekofisk Field > Tor Formation (0.99)
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...ent and Service Tools * 7.1 Gravel-Pack Base * 7.2 Seal Assembly * 7.3 Gravel-Pack Screen * 7.4 Blank Pipe * 8 Shear-Out Safety Joint * 8.1 Knock-Out Isolation Valve * 8.2 Gravel-Pack Extension * 8...
Conventional well completions in soft formations (the compressive strength is less than 1,000 psi) commonly produce formation sand or fines with fluids. These formations are usually geologically young (Tertiary age) and shallow, and they have little or no natural cementation. Sand production is unwanted because it can plug wells, erode equipment, and reduce well productivity. It also has no economic value. Nonetheless, formation sand production from wells is dealt with daily on a global basis. In certain producing regions, sand control completions are the dominant type and result in considerable added expense to operations.
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...uid level can be wherever the operator wants it, provided that the level safety high (LSH) can shut off inflow before liquid overflow occurs and that the level safety low can respond before the level has...ons On average, process variables are found within their normal operating ranges, but horns do go off and shut-ins do occur. When chokes and controllers that normally keep the process variables in thei...ts two groups of safety devices: "common" (i.e., typical oilfield) names such as check valve or pop-off valve and "proper" names from the Instrument Soc. of America (ISA), such as flow safety valve or pr...
The American Petroleum Institute (API) has developed RP 14C,[1] a safety-analysis approach based on a number of traditional hazards-analysis techniques such as failure-mode-effects analysis (FMEA) and hazard-and-operability studies (HAZOPS). The purpose of a safety analysis is to identify undesirable events that might pose a threat to safety and define reliable protection measures that will prevent such events or minimize their effects should they occur. Potential threats to safety are identified through proven hazards-analysis techniques that have been adapted to hydrocarbon-production processes. Recommended protective measures are common industry practices proved through many years of operating experience. The hazards analysis and protective measures have been combined into a "safety analysis" for onshore and offshore production facilities. The RP 14C[1] safety analysis is based on the following premises. This page explains the basic concepts of protection used in the analysis, discusses the methods of analyzing the process, and establishes design criteria for an integrated safety system. The entire production process is covered, and a step-by-step summary for performing a safety analysis is provided. A variable fluctuates between a lower and an upper extreme value.
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