Method for guiding well cementing operation based on caliper logging data
A well logging data and cementing technology, which is applied in wellbore/well components, measurement, earthwork drilling and production, etc., can solve complex problems, achieve accurate wellbore quality and prevent stuck pipes
Active Publication Date: 2015-05-20
BC P INC CHINA NAT PETROLEUM CORP +1
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[0008] In order to solve the problems of the prior art, the present invention proposes a method for guiding cementing construction based on caliper logging data. This technology starts from the accurate calculation of the amount of cement slurry used in the well, and analyzes the quality of the borehole through the caliper logging data. , to provide guidance for smooth cementing construction and avoid complex cementing problems
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] Such as figure 1 As shown, it is a flow chart of a method for guiding cementing construction based on caliper logging data proposed by the present invention. include:
[0040] Step 101): Using a caliper to measure the open-hole section after drilling to obtain caliper logging data;
[0041] In this embodiment, the caliper is preferably a four-arm caliper
[0042] Step 102): using the caliper logging data to draw two-dimensional and three-dimensional ...
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The invention relates to a method for guiding well cementing operation based on caliper logging data. The method includes the steps of obtaining the caliper logging data by measuring an after-drilling open well section through a caliper, drawing a two-dimensional borehole graph and a three-dimensional borehole graph through the caliper logging data, analyzing the borehole quality conditions through the two-dimensional borehole graph and the three-dimensional borehole graph to obtain a caliper expansion rate, obtaining a borehole eccentricity through the caliper logging data, evaluating the borehole quality through the borehole eccentricity and the caliper expansion rate, obtaining the well cementing cement paste consumption through the caliper logging data, and guiding the well cementing construction according to the borehole quality evaluation and the well cementing cement paste consumption. By means of the construction process, the borehole quality can be more accurately judged, and the well cementing complex problems that due to the fact that circulation is unsmooth and a sleeve correcting device is not reasonable in placement position after a clamping sleeve and a sleeve are lowered during well cementing, failures occur, the replacement efficiency during well cementing is not high, a production layer can not be sealed when the cement return height is not enough, and waste is caused when the cement paste injection amount is too large are effectively solved.
Description
technical field [0001] The invention relates to the technical field of well cementing construction, in particular to a method for guiding well cementing construction based on caliper logging data. Background technique [0002] Well cementing is a finalized job. If there is a problem in the cementing work, the oil and gas well will be scrapped, and the most important thing in cementing is casing and cement injection. If the wellbore quality cannot be accurately analyzed, it is easy to have problems such as pipe cutting during casing running, circulation failure after casing running, casing eccentricity, casing or back pressure valve collapse, casing fracture, casing leakage and other problems. The amount of cement slurry is an important parameter in well cementing and injection operations. Accurate calculation of cementing slurry dosage can avoid waste, save cementing cost and improve cementing quality. [0003] Hole caliper enlargement rate is one of the most important par...
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Login to View More IPC IPC(8): E21B33/13
CPCE21B33/13E21B47/00
Inventor 马鹏鹏姜英健周英操蒋宏伟王倩霍宗强连志龙宋鹏杨洋王思敏
Owner BC P INC CHINA NAT PETROLEUM CORP