Open AccessDiscussion on casing damage situation and prevention methods in a block
Author(s) -
Dandan Zhang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/781/2/022013
Subject(s) - casing , petroleum engineering , block (permutation group theory) , injection well , geology , environmental science , lithology , production (economics) , water injection (oil production) , mining engineering , engineering , geotechnical engineering , forensic engineering , petrology , geometry , mathematics , economics , macroeconomics
With the development of A oilfield and the constant adjustment of water injection scheme, affected by geological, engineering and development factors, the casing of oil and water wells will be damaged to varying degrees. Casing damage not only leads to the normal production of this well, but also needs to invest a lot of money for overhaul and renewal. At the same time, it will destroy the original injection-production system in this area and accelerate the production decline. Therefore, it is of great significance to study the causes of casing damage and its prevention technology for preventing casing damage and improving injection-production relationship. In this paper, a fault block in A oilfield is taken as the research object. By analyzing the present situation of casing damage in this block and the distribution law of casing damage wells in plane and longitudinal direction, combining with lithology and pressure conditions, the causes of casing damage are analyzed, and finally the countermeasures are put forward to improve the oilfield development effect and ensure the sustainable development of A oilfield.