Analysis of impact load on tubing and shock absorption during perforating

Abstract During the past few decades, the technologies of the higher-shot densities, larger perforating guns and tubing-conveyed perforation (TCP) combined well testing have been used widely used for well completions. This results in a large increase of impact loads in the tubing during TCP. The safety of the tubing is directly related to the success of perforation combined well test,which is the key link in the oil and gas production. In this study, the influence factors of perforating impact load have firstly been analyzed. Also the dynamic response of tubing during TCP in three dimensions has been studied by numerical simulation. According to the computing results, the vulnerable parts of tubing during TCP have been found, where the axial impact load is the strongest and it is concluded that the axial shock absorber has the optimal installation position to achieve the best shock absorption effect, which is verified by the case. This study proposes a novel method for the safety analysis of the tubing, which has important significance to provide guidance for the design of field perforating operations and to improve security.

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Attribute expression of channel forms in a hybrid carbonate turbidite formation

Interpretation ◽

10.1190/int-2015-0108.1 ◽

2016 ◽

Vol 4 (2) ◽

pp. SE75-SE86 ◽

Cited By ~ 10

Author(s):

Bradley C. Wallet

Keyword(s):

Western Australia ◽

Oil And Gas ◽

Seismic Attributes ◽

Gas Production ◽

Three Dimensions ◽

Interesting Phenomenon ◽

Oil And Gas Production ◽

Turbidite System ◽

Conventional Oil

Much of the world’s conventional oil and gas production comes from turbidite systems. Interpreting them in three dimensions using commercially available software generally requires seismic attributes. Hybrid carbonate turbidite systems are an interesting phenomenon that is not fully understood. I have examined the attribute expression of channel forms in a hybrid carbonate turbidite system from off the coast of Western Australia. I have determined several characteristic responses to attributes that improve the ability to identify and delineate the channel forms. Finally, I have evaluated and developed a workflow that is effective at modeling and extracting the channel forms in three dimensions, leading to a product that can be used in further understanding of how carbonate turbidite systems develop.

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Breaking Load on Jacket Structure

Volume 7: Ocean Engineering ◽

10.1115/omae2016-54734 ◽

2016 ◽

Author(s):

Sruthi Chandrasekar ◽

Sriram Venkatachalam

Keyword(s):

Wave Breaking ◽

Oil And Gas ◽

Impact Load ◽

Breaking Load ◽

Gas Production ◽

Oil And Gas Production ◽

Depth Analysis ◽

Duhamel Integral ◽

Offshore Industry ◽

The Impact

Jackets are structures used in the offshore industry as a bottom supported platform for oil and gas production. The jackets have to be built in order to withstand the harsh sea environment. Such designs demand in depth analysis to predict the loads acting on the structure and its response. Depending on the sea states in which the structure needs to be installed, breaking load can be important. Estimation of breaking load for single cylinder exists in literature, since the breaking load on the jacket structure needs a lot more clarity. The aim of this paper is to estimate the impact force on a model jacket using Duhamel integral, which was not explored before. The impact load so far analyzed was compared with theoretical explanations given by Goda, et al. (1966), Wienke and Oumeraci (2005). The scope of the study is limited to plunging type of breakers. Five loading cases include wave breaking at far-front of a structure, in front of structure, on the front leg, on the rear leg and a non-breaking case was considered.

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IMPROVEMENT OF EXPRESS METHOD OF HYDRODYNAMIC WELL TESTING IN THE CONDITIONS OF OIL AND GAS FIELDS OF OIL AND GAS PRODUCTION DEPARTMENT «YAMASHNEFT»

Oil and Gas Studies ◽

10.31660/0445-0108-2017-3-41-47 ◽

2017 ◽

pp. 41-47

Author(s):

E. A. Andaeva ◽

A. V. Lysenkov ◽

M. T. Khannanov

Keyword(s):

Real Time ◽

Oil And Gas ◽

Pressure Change ◽

Gas Production ◽

Well Testing ◽

Express Method ◽

Oil And Gas Production ◽

Oil And Gas Fields ◽

Gas Fields ◽

Technical Measures

To increase the efficiency of hydrodynamic well testing after the geological and technical measures, it is proposed to record the pressure change at the bottom of the well during the development by means of the GIC. Such a solution will allow to combine the process of well development after the IPF with the study, thereby increasing the control over the success of the repairs carried out without additional downtime in real time.

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