Increase Of Accuracy In Determination Of Skin-Effect And Perm Thickness Product For Low Permeability Reservoirs

Production wells that have penetrated low-permeability reservoirs do not provide adequate oil production due to the degraded condition of the near-wellbore zones of the reservoir. Objective assessment of the condition of the near-wellbore formation zone of exploration and production wells by determining the magnitudes and values of skin effects using well tests allows timely implementation of measures to increase the productivity of wells and oil production.In this article, the following aspects of difficult-to-recover oil production were examined:- The analysis of the dependence of well productivity on the magnitude and significance of the skin effect, in order to assess the condition of the bottomhole formation zone for further planning and implementation of oil and gas inflow stimulation measures;- The influence of the magnitude and significance of the skin effect on the condition of the bottomhole formation zone on the experience of developing exploration wells penetrated into low-permeability formations in the fields of Western Siberia;- Criteria (based on the value and magnitude of the skin effect) for selecting methods of stimulating the bottomhole formation zone to increase the productivity of low-rate wells.

Download Full-text

Research on Determination of the Action Radius of Nitrogen Huff and Puff in Low-Permeability Reservoirs

Springer Series in Geomechanics and Geoengineering - Proceedings of the International Field Exploration and Development Conference 2017 ◽

10.1007/978-981-10-7560-5_35 ◽

2018 ◽

pp. 395-401

Author(s):

Jian Li ◽

Zhaomin Li ◽

Teng Lu ◽

Qingwei Feng ◽

Huiping Wan ◽

...

Keyword(s):

Low Permeability ◽

Low Permeability Reservoirs

Download Full-text

Methodology for determination of low-permeability reservoirs development

PROneft’ Proffessional’no o nefti ◽

10.24887/2587-7399-2018-1-49-51 ◽

2018 ◽

pp. 49-51

Author(s):

E.V. Belonogov ◽

◽

A.A. Pustovskikh ◽

A.N. Sitnikov ◽

◽

...

Keyword(s):

Low Permeability ◽

Low Permeability Reservoirs

Download Full-text

WELL TESTING HORIZONTALGAS-CONDENSATE WELLS

Oil and Gas Studies ◽

10.31660/0445-0108-2017-3-56-61 ◽

2017 ◽

pp. 56-61

Author(s):

M. L. Karnaukhov ◽

O. N. Pavelyeva

Keyword(s):

Comparative Analysis ◽

Skin Effect ◽

Horizontal Wells ◽

Gas Condensate ◽

Low Permeability ◽

Well Testing ◽

Flow Capacity ◽

Formation Zone ◽

Horizontal Wellbore

The well testing of gas-condensate horizontal wells are discussed in the article and the comparative analysis of borehole flow capacity, depending on the mode of it’s operation is presented. Extra attention is focused on the issue of timely identification of the reasons for the reduction of fluid withdrawal from the reservoir. The presence of high skin effect is proved, which confirms the existence of low-permeability of bottomhole formation zone related to condensation in the immediate area of the horizontal wellbore.

Download Full-text

ASSESSMENT OF OIL WELL PRODUCTIVITY IN LOW-PERMEABILITY RESERVOIRS IN THE FIELDS OF EASTERN SIBERIA

Oil and Gas Studies ◽

10.31660/0445-0108-2017-3-30-36 ◽

2017 ◽

pp. 30-36

Author(s):

R. V. Urvantsev ◽

S. E. Cheban

Keyword(s):

Oil Recovery ◽

Large Scale ◽

Oil And Gas ◽

Oil Extraction ◽

Low Permeability ◽

Oil Well ◽

Eastern Siberia ◽

Development Costs ◽

Traditional Fields ◽

Low Permeability Reservoirs

The 21st century witnessed the development of the oil extraction industry in Russia due to the intensifica- tion of its production at the existing traditional fields of Western Siberia, the Volga region and other oil-extracting regions, and due discovering new oil and gas provinces. At that time the path to the development of fields in Eastern Siberia was already paved. The large-scale discoveries of a number of fields made here in the 70s-80s of the 20th century are only being developed now. The process of development itself is rather slow in view of a number of reasons. Create a problem of high cost value of oil extraction in the region. One of the major tasks is obtaining the maximum oil recovery factor while reducing the development costs. The carbonate layer lying within the Katangsky suite is low-permeability, and its inventories are categorised as hard to recover. Now, the object is at a stage of trial development,which foregrounds researches on selecting the effective methods of oil extraction.

Download Full-text