Common Pitfalls in Selection of Restriction Orifice for Depressurization of Oil and Gas Facilities

2017 ◽  
Author(s):  
Rakesh Wasnik ◽  
Bhupinder Singh ◽  
Harendra Singh ◽  
Faris Kamal ◽  
Ousssama Takieddine
Keyword(s):  
Oil And Gas ◽  
Selection Of

Modeling to support physicochemical enhancement techniques

2021 ◽  
pp. 79-90
Author(s):  
Т. A. Pospelova
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Oil And Gas ◽  
Chemical Modeling ◽  
Comparative Structure ◽  
Water Cut ◽  
Physical And Chemical ◽  
Oil And Gas Companies ◽  
The Impact ◽  
Selection Of

The article discusses ways to increase the oil recovery factor in already developed fields, special attention is paid to the methods of enhanced oil recovery. The comparative structure of oil production in Russia in the medium term is given. The experience of oil and gas companies in the application of enhanced oil recovery in the fields is analyzed and the dynamics of the growth in the use of various enhanced oil recovery in Russia is estimated. With an increase in the number of operations in the fields, the requirements for the selection of candidates inevitably increase, therefore, the work focuses on hydrodynamic modeling of physical and chemical modeling, highlights the features and disadvantages of existing simulators. The main dependences for adequate modeling during polymer flooding are given. The calculation with different concentration of polymer solution is presented, which significantly affects the water cut and further reduction of operating costs for the preparation of the produced fluid. The possibility of creating a specialized hydrodynamic simulator for low-volume chemical enhanced oil recovery is considered, since mainly simulators are applicable for chemical waterflooding and the impact is on the formation as a whole.

CORROSION INHIBITORS IN OIL AND GAS PRODUCING EQUIPMENT

1972 ◽  
Vol 12 (1) ◽  
pp. 99
Author(s):  
Roy D. Stanphill ◽  
R.W. Gibson
Keyword(s):  
Corrosion Inhibitor ◽  
Corrosion Inhibitors ◽  
Oil And Gas ◽  
Field Conditions ◽  
Screening Tests ◽  
Inhibitor Efficiency ◽  
Organic Corrosion Inhibitor ◽  
The One ◽  
Specific Formulation ◽  
Selection Of

Most internal corrosive conditions found in oil and gas producing equipment can be controlled through the use of corrosion inhibitors. Organic corrosion inhibitor chemistry is now well known and inhibition mechanisms are understood. There are many good inhibitor formulations available today; so many, in fact, that the producer is faced with the problem of selecting the one best suited to his requirements. Many people depend solely on various types of comparative inhibitor efficiency tests in the laboratory to evaluate and select inhibitors for use under field conditions. These tests are important as relative screening tests, but the selection of a carefully planned application program for the specific formulation is equally important.

Achieving Efficiency in Environmental Assessment Through Focused Selection of Valued Components

2014 ◽  
Author(s):  
Ward Prystay ◽  
Andrea Pomeroy ◽  
Sandra Webster
Keyword(s):  
British Columbia ◽  
First Nations ◽  
Environmental Assessment ◽  
Local Governments ◽  
Oil And Gas ◽  
Assessment Process ◽  
Environmental Assessments ◽  
Baseline Information ◽  
The Government ◽  
Selection Of

Some of the largest oil and gas projects in Canada are currently being proposed in British Columbia. Establishing a fulsome and scientifically and socially defensible scope for environmental assessments in the oil and gas sector is a serious challenge for government and proponents. The approach taken by the federal National Energy Board to scope effects assessments on pipelines is quite different than the approach taken by the British Columbia Environmental Assessment Office on other types of oil and gas projects. The NEB has published guidelines for scoping and conducting environmental and socio-economic assessments within its Filing Manual (National Energy Board [NEB] 2014). This manual sets out the expectations for scoping, baseline information, and effects assessments to be submitted as part of approval applications. Proponents are expected to provide all information necessary to meet the guidelines. In British Columbia, the environmental assessment process is dictated by the British Columbia Environmental Assessment Act and includes a negotiated terms of reference for the assessment, called the Application Information Requirements (AIR). The approach to selection of valued components is guided by provincial guidelines (EAO, 2013). The first draft of the AIR is prepared by the proponent and is then amended to address matters raised by federal and provincial agencies, local governments, and representatives of potentially affected First Nations. Through two to three revisions, the scope of assessment is jointly established and then formally issued by the government. While there are valid reasons for the differing federal and provincial approaches to scoping environmental assessments, each of these processes create risks for proponents in terms of project timelines and costs for preparing the environmental assessment. More specifically, the use of generic and negotiated guidelines can result in a number of issues including: • A scope of assessment that is broader than necessary to understand the potential for significant adverse effects • Inclusion of issues that are “near and dear” to a specific regulator or community but has no direct relationship to the effects of the project itself • Selection of valued components that do not allow for defensible quantification of effects or use of directly relevant significance thresholds • Selection of valued components that are only of indirect concern as opposed to focusing the assessment on the true concern. • Double counting of environmental effects • Risks in assessing cumulative effects This paper discusses where and how these risks occur, and provides examples from recent and current environmental assessments for pipelines and facilities in British Columbia. Opportunities to manage the scope of assessment while providing a fulsome, efficient, effective and scientifically/socially defensible assessment are discussed.

Development and Implementation of a Risk Based Prioritization Methodology for MAOP Reconfirmation of Gas Transmission Facilities

2016 ◽  
Author(s):  
Wytze Sloterdijk ◽  
Martin Hommes ◽  
Roelof Coster ◽  
Troy Rovella ◽  
Sarah Herbison
Keyword(s):  
Oil And Gas ◽  
Environmental Data ◽  
Operating Pressure ◽  
Line Pipe ◽  
Relative Significance ◽  
Coherent Risk ◽  
Relative Risks ◽  
Short And Long Term ◽  
Selection Of

As part of Pacific Gas and Electric Company’s (PG&E) on-going commitment to public safety, the company has begun a comprehensive engineering validation of its gas transmission facilities that will ultimately support the reconfirmation of maximum allowable operating pressure (MAOP) for these assets. In addition to 6,750 miles of line pipe, PG&E’s gas transmission system contains over 500 station facilities. Since this set of facilities is not only large but diverse, and the validation effort for these facilities is expected to be an extensive, multi-year process, a methodology for the prioritization of the facilities needed to be developed to facilitate planning of the process for the efficient mitigation of risk. As a result, DNV GL was retained to develop and implement a risk-based prioritization methodology to prioritize PG&E’s gas transmission facilities for the engineering validation and MAOP reconfirmation effort. Ultimately, a weighted multiple criteria decision analysis (MCDA) approach was selected and implemented to generate the prioritization. This MCDA approach consisted of the selection of relevant criteria (threats) and the weighting of these criteria according to their relative significance to PG&E’s facilities. Relevant criteria selected for inclusion in the analysis include factors that are important in order to assess both the short- and long-term integrity of the facility as a whole as well as the integrity of features for which design records cannot be located. The criteria selected encompass stable threats, time-dependent threats, as well as environmental impact. Enormous amounts of data related to design, operations, maintenance history and meteorological and seismic activity in addition to other environmental data were evaluated with this newly developed methodology to assess the relative risks of the facilities. Pilot field visits were performed to validate the selection of the various criteria and to confirm the outcome of the analysis. The novelty of this approach lies in the prioritization of facilities in a coherent risk-based manner. The described approach can be used by operators of oil and gas facilities, either upstream, midstream or downstream.

Research Regarding Heat Treatment Influence on Properties of Chromic Steel 40H GOST 4543-71(DIN 41Cr4, Gb 40Cr, ASTM 5140) with Quenching in Polymer Solution with Purpose of Matching Tubing Pipes which Used in Oil and Gas Extraction

2018 ◽  
Vol 284 ◽  
pp. 402-407 ◽  
Author(s):  
S.N. Dzhabbarov ◽  
E.I. Pryakhin ◽  
A.A. Germanov
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
Low Temperature ◽  
Oil And Gas ◽  
Constructional Steel ◽  
Gas Extraction ◽  
Research Activity ◽  
The Right ◽  
Production Tubing ◽  
Selection Of

According to GOST 4543-71, steel 40H refers to the group of chromium steels. It is a low-alloy constructional steel of pearlite class. The paper presents a theoretical and experimental research activity carried out in order to improve the properties of the 40H steel. The results permit the selection of the right heat-treatment parameters that offer the best combination between the yield strength, tensile strength, elongation, necking, impact strength at low temperature and hardness, in order to obtain a better behavior of the material for production tubing pipes in accordance with GOST 633 Tubing pipes and couplings for them, for strength group M and L.

A Mechanical Analysis of BHA Used in Casing-Window-Milling for Sidetracking

2014 ◽  
Vol 933 ◽  
pp. 265-271
Author(s):  
Zhao Hui Xu ◽  
De Li Gao
Keyword(s):  
Oil And Gas ◽  
Mechanical Analysis ◽  
Drill String ◽  
Drilling Parameters ◽  
Unconventional Oil And Gas ◽  
Research Achievement ◽  
Stress And Deformation ◽  
Analysis Models ◽  
The Relationship ◽  
Selection Of

As more and more sidetracking old wells are required in mature fields, a lot of applications in casing window milling technology, such as drilling for unconventional oil and gas, multi-lateral wells and laterals, are applied. In this paper, the mechanical properties of the BHA in different stages of window milling for sidetracking are analyzed in detail. Based on the commonly-used vertical and horizontal bending analysis, mechanical analysis models of BHA with three bits for windows milling are proposed. With these mechanical analysis models, different mechanical parameters of window milling BHA at different stages during the window operation can easily be calculated. The research achievement in this paper is helpful not only to understand the relationship between drilling parameters and drill string, stress and deformation of bits, but also to predict the side force and direction of bits and to determine the size of the drill string deformation. It can also provide references to BHA design and the selection of sidetracking operation parameters.

A Means of Increasing Drill Collar Connection Life

1973 ◽  
Vol 95 (1) ◽  
pp. 243-246
Author(s):  
P. D. Weiner ◽  
M. E. True
Keyword(s):  
Oil And Gas ◽  
Development Program ◽  
Stress Relief ◽  
Fatigue Tests ◽  
Gas Wells ◽  
Field Service ◽  
Oil And Gas Wells ◽  
Laboratory Investigations ◽  
Selection Of ◽  
Drill Collar

Drill collar connection failures have increased as oil and gas wells are drilled to greater depths requiring the use of smaller collars. The high cost resulting from these failures prompted a project to develop means of reducing the drill collar connection failures. This paper discusses laboratory investigations and the results of a development program conducted by Texas A&M University Research Foundation to determine the magnitude of drill collar connection stresses and the selection of a collar modification to reduce connection stresses. Full-scale laboratory fatigue tests of drill collar connections and subsequent field service demonstrated that the use of exterior stress relief grooves on each side of the connection materially increased connection life before failure occurred. Field Service tests following fuel scale laboratory fatigue tests show increased drill collar connection life resulting from use of exterior stress-relief grooves.

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