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Search Petrowiki: Core analyses in tight gas reservoirs
...the geological and tectonic effects that can impact the design and successful completion of oil and gas and geothermal wells, and it introduces methods and techniques to characterize those processes and ...sing Wellbore Failure * 4.2 Using Seismic Anisotropy * 4.3 Using Crossed-Dipole Sonic Logs * 4.4 Core-Based Analysis of Stress Orientation * 4.5 Geological Indicators of Stress Orientation * 5 Buildi...perturbations, both natural and manmade, are important to consider for application of geomechanical analyses to drilling and reservoir engineering (Fig. 1.3).[1] * Table 1.1 * Fig. 1.2--World stress map...
In the early years of oil drilling and production, wells were primarily drilled on land to moderate depths and with relatively minor horizontal offsets, and an empirical understanding of the impact of geological forces and Earth material properties on required drilling practice was developed by region. Successful practices were defined by trial and (sometimes costly and spectacular) error. Once local conditions were understood, it then became possible to drill new wells with a sufficient degree of confidence to guarantee the safety and economic success of further field developments. However, techniques that were successful in one field were not necessarily successful in other fields, and, therefore, the trial-and-error learning process often had to be repeated. Because wells have become more expensive and complex, both in terms of well geometry (reach and length) and access to deep, high-temperature, high-pore-pressure, and high-stress regimes, it has become clear that the economic success of field developments can only be assured if geology and tectonics are understood and field activities are designed with that understanding. Furthermore, constraints on engineering practice based on environmental and societal requirements necessitate specially designed mud formulations and drilling techniques.
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- Geology > Geological Subdiscipline > Geomechanics (1.00)
- Geology > Structural Geology > Tectonics > Plate Tectonics > Earthquake (0.46)
- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Mudrock > Shale (0.30)
- Geophysics > Seismic Surveying > Borehole Seismic Surveying (1.00)
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- Geophysics > Seismic Surveying > Seismic Modeling > Velocity Modeling (0.46)
- North America > United States > California > San Joaquin Basin (0.99)
- North America > United States > Alaska > Cook Inlet Basin > Hemlock Formation (0.99)
- Europe > Norway > North Sea > Northern North Sea > East Shetland Basin > License 120 > Block 34/8 > Visund Field > Ststfjord Formation (0.99)
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- Well Drilling > Wellbore Design > Wellbore integrity (1.00)
- Well Drilling > Well Planning > Trajectory design (1.00)
- Well Drilling > Pressure Management > Well control (1.00)
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...gh concentrations of sand or other produced solids. * Ability to tolerate high percentages of free gas. * No valves or reciprocating parts to clog, ...gas lock, or wear. * Good resistance to abrasion. * Low internal shear rates (limits fluid emulsifica...tment fluids). * Subject to low volumetric efficiency in wells producing substantial quantities of gas. * Sucker rod strings may be susceptible to fatigue failures. * Pump stator may sustain permanent...
Introduction Progressing cavity pumping (PCP) systems derive their name from the unique, positive displacement pump that evolved from the helical gear pump concept first developed by Rene Moineau in the late 1920s.[1][2][3] Although these pumps are now most commonly referred to as progressing cavity (PC) pumps, they also are called screw pumps or Moineau pumps. PC pumps initially were used extensively as fluid transfer pumps in a wide range of industrial and manufacturing applications, with some attempts made to use them for the surface transfer of oilfield fluids. However, it was not until after the development of synthetic elastomers and adhesives in the late 1940s that PC pumps could be applied effectively in applications involving petroleum-based fluids. Except for several limited field trials, it was not until the late 1970s that a concerted effort was made to use PC pumps as a method of artificial lift for the petroleum industry.
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...eline segments. The reported dimensions of the conundrums were 60 ft in width (flange-to-flange), a core diameter of 40 ft, and a flange diameter of 80 ft. These conundrums were designed to be sufficientl...occurred in the early 1940s, the first concept developed for use of continuous-length tubing in oil/gas wellbore services can be found in U.S. Patent 1,965,563, "Well Boring Machine," awarded on 10 July ...ntinuous-string light workover unit" for use in washing out sand bridges in U.S. Gulf of Mexico oil/gas wells (Fig. 16.3). The original "Unit No. 1" injector was designed as a vertical, counter-rotating,...
Numerous continuous-length tubular service concept trials and inventions paved the way for the creation of present day CT technology. The following discussion outlines some of the inventions and major milestones that directly contributed to the evolution of the continuous-length tubular products used in modern CT services. The origins of continuous-length, steel-tubing technology can be traced to engineering and fabrication work pioneered by Allied engineering teams during the Second World War. Project 99, code named "PLUTO" (an acronym for Pipe Lines Under The Ocean), was a top-secret Allied invasion enterprise involving the deployment of pipelines from the coast of England to several points along the coast of France.
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- Europe > United Kingdom > North Sea > Central North Sea > Central Graben > Block 21/10 > Forties Field > Forties Formation (0.99)
- Asia > India > Rajasthan > Cambay Basin (0.99)
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...ical step-by-step process and then select and execute an appropriate chemical treatment for the oil/gas well. The guidelines are practical in intent and avoid the more complicated acid reaction chemistri...nted the results of an extensive statistical review of one company's acidizing success in sandstone reservoirs in the U.S. He found that only 54% of 507 wells increased in production following hydrofluoric (HF)...system (wrong size tubing in a flowing well or inefficient artificial lift equipment for pumping or gas lift wells), (2) low reservoir permeability, or (3) wellbore restriction because of formation damag...
Acidizing is used to either stimulate a well to greater than ideal matrix reservoir flow or to remove damage. These are two distinct and different purposes, the field applications and results of which are often merged or confused. Basically, there are two types of acid treatments that are related to injection rates and pressures. Injection rates resulting in pressures below fracture pressure are termed "matrix acidizing," while those above fracture pressure are termed "fracture acidizing." Figure 1.1 shows the increase in pressure linearly with rate until parting pressure is attained, at which time rate can continue to increase with little change in pressure above parting pressure. Matrix acidizing is used primarily for damage removal, while fracture acidizing is used to enlarge the effective wellbore by creating an acid-etched fracture deep into the wellbore for relatively low-permeability formations to improve well productivity several-fold. This chapter focuses on matrix acidizing.
- Geology > Mineral (1.00)
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- Geology > Rock Type > Sedimentary Rock > Clastic Rock > Sandstone (0.95)
- Materials > Chemicals > Commodity Chemicals > Petrochemicals (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- North America > United States > Texas > Permian Basin > Yeso Formation (0.99)
- North America > United States > Texas > Permian Basin > Yates Formation (0.99)
- North America > United States > Texas > Permian Basin > Wolfcamp Formation (0.99)
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...neers Chapter 11 – Sucker-Rod Lift Norman W. Hein Jr., ConocoPhillips - Retired; now with Oil & Gas Optimization Specialists, Ltd. Pgs. 457-519 ISBN 978-1-55563-118-5 Get permission for reuse ...ervoir * 2.1 Bottomhole-Pressure Determination * 2.2 Inflow Performance Relationship (IPR) * 2.3 Gas Production * 2.4 ...Gas Venting * 2.5 Effects of ...
This chapter discusses the specific artificial-lift technique known as beam pumping, or the sucker-rod-lift method. Many books, technical articles, and industry standards have been published on the sucker-rod lift method and related technology.[1][2][3][4][5][6][7] This chapter is a complete revision of previous editions of thePetroleum Engineering Handbook,[6] but it combines the prior three relevant chapters that covered downhole rod pumps and sucker rods, along with pumping units and prime movers. Additionally, the other components of a sucker-rod pumping installation are discussed, including applicable engineering and operating information. The complete operating system should be understood and addressed to properly design, install, and operate this or any other type of artificial-lift system. Thus, this chapter uses the Gipson and Swaim "Beam Pump Design Chain" as a foundation and builds on this design philosophy by using relevant, published technology and the latest industry practices.[5][6][7]
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- North America > United States > Texas > Permian Basin > Yeso Formation (0.99)
- North America > United States > Texas > Permian Basin > Yates Formation (0.99)
- North America > United States > Texas > Permian Basin > Wolfcamp Formation (0.99)
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