CN101270654A

CN101270654A - Well position disposition method for oil-field development

Info

Publication number: CN101270654A
Application number: CNA2008101029745A
Authority: CN
Inventors: 张世甫; 张鼎业
Original assignee: Anton Oilfield Services Group Ltd
Current assignee: Anton Oilfield Services Group Ltd
Priority date: 2008-03-28
Filing date: 2008-03-28
Publication date: 2008-09-24

Abstract

The invention discloses a well-position disposition method for developing an oil field. On the known oil field, the well position is disposed at the area with mesh structure where a trough zone intersects another trough zone. Equidistant or approximate parallel standard is adopted to dispose other well positions around the disposed well position, which means that the new well position basically similar to the known well position can be found at a place that is approximately parallel and equidistant to the known well position. With the well-disposition method adopted, the region with rich oil source can be found correctly and quickly. So the well-disposition method can realize rolling development, brake through the conventional development mode for developing the oil field and achieve the effects of high efficiency and low cost.

Description

A kind of well location dispositions method of oil field development

Technical field

The present invention relates to a kind of well location dispositions method, particularly relate to a kind of well location dispositions method of oil field development.

Background technology

Oil field development well location deployment at present mainly is according to the geology achievement in research, in conjunction with the reservoir numerical simulation result, consider distribution situations deployment well patterns such as geostatic stress and microcrack, determine well location by well pattern then, the basic data that this well location dispositions method needs is many, the on-the-spot very flexible of adjusting according to topography and geomorphology, well pattern determines that the back well location is also definite, if the deployment of a bite well is subjected to the landform restriction, then whole well pattern deployment scheme need be readjusted, and disposes according to well pattern that to develop mainly be at the integral body in oil field and long-range, needs overall consideration, invest huge, very inapplicable for the rolling development of small oil field.For a find block or the very low oil field block of the degree of verifying, the data that can be used for analyzing is limited, like this according to well pattern dispose develop difficulty big, drop into high, have a big risk, and develop according to the well pattern deployment scheme at the very start, the well that falls through appears unavoidably, have very big blindness, the developer for limited fund is difficult to implement this scale development pattern especially.

The wavy mosaic structure theory is a kind of earth crust structure and the crustal movement theory that the late professor Zhang Baisheng of Northwest University foundes, and is one of " China's five big geological tectonicses are sent ".This theory thinks that the whole earth's crust is by other active belt of level that varies in size it to be divided into other crustal block body of level that varies in size, and these blocks are referred to as the mosaic-like structure of the earth's crust as being embedded on the earth's crust.Wavy mosaic structure is theoretical through the last 100 years development, theoretical system is quite ripe, instruct to seek groundwater resources, looking for and use quite successfully aspect the coal, under this theoretical direction, seek the underground water success rate and reach 98%, the minimum 50 side/skies that reach of the individual well water yield played very big directive function aspect the coal looking for, but the application of this theory on the oil field do not appear in the newspapers yet.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of well location dispositions method of oil field development, not limited by topography and geomorphology so that well location is disposed, and also need not follow the prescribed order by the well pattern scheme and carry out the well location deployment, the rolling development form is flexible, development cost is low, and risk is little, the success rate height.

For solving the problems of the technologies described above, the invention provides a kind of well location dispositions method of oil field development, comprise, on known oil field, in trough band and the crossing structure mesh district deployment well location of trough band.

The well location dispositions method of above-mentioned oil field development, wherein, described disposed well location around, adopt equidistantly or and dispose other well locations like parallel criterion, promptly can find the well location similar substantially to existing well location in substantially parallel with existing well location, roughly equidistant place.

The wavy mosaic structure theory thinks that earth surface presents oblique side's reticulated structure general layout regularly, in big oblique side's grid, also has oblique side's grid of time one-level, more inferior one-level, the earth's crust is divided, is divided into once more littler so that micro-block.These structural features also have tangible reflection on landforms, landform.

Trough band and trough band intersect, and form the structure mesh.Because the different directions wave system crosses at this, thereby form rerum natura zone of fracture preferably, what show as on the face of land that trough intersects is bigger hollow, this hollow oil-gas bearing basin that mostly is, because rerum natura is better, so the underground fluid good fluidity, mostly be the high-yield well place.Cross by the identification wave system, in conjunction with geomorphic feature, the district disposes producing well at the structure mesh, and is general than other regional well high yield.

Adopt the well location dispositions method of oil field development of the present invention, on the basis of existing block geological research, introducing wavy mosaic structure theory, the topography and geomorphology of calmodulin binding domain CaM, seek the oil-containing enrichment region rapidly and accurately, realize rolling development, break original traditional well pattern development mode, realize the oilfield development model of high efficiency, low cost.

Description of drawings

Fig. 1 is an earth's crust wave mosaic-like structure schematic diagram.

The specific embodiment

Describe the present invention in detail below in conjunction with Fig. 1 and embodiment.

Fig. 1 is a simple earth's crust wave mosaic-like structure schematic diagram, wherein I represents the Siberia wave system, II represents the tethys wave system, III represents the Pacific Rim wave system, the earth's crust is mainly encircled the too effect of the power of wave system, tethys wave system, three directions of Siberia wave system among the figure, wherein encircles wave system too, these two power of the tethys wave system power much larger than the Siberia wave system.

Encircle too the direction of wave system power and be northwest (NW)-east southeast to, thereby formed the earth's crust so that surperficial east northeast-Nan Xi constructs to wave; The direction of tethys wave system power be east northeast-Nan Xi to, thereby formed the earth's crust so that surperficial northwest (NW)-east southeast is constructed to wave, these two groups of waves structures make the earth's crust form the tectonic framework that block is inlayed.

According to wave mosaic-like structure theory and topography and geomorphology, discovery is in certain zone, this two groups of wave structure peak valleys conversion is certain rules, thereby make this mosaic-like structure of the earth's crust also present corresponding regularity, promptly equidistantly, like parallel rule, calmodulin binding domain CaM structure trend and probable ranges, this rule is very useful in practice.

On the basis in existing oil field, according to this regional topography and geomorphology, in trough band and the crossing structure mesh deploy well location of trough band.Basis equidistantly or like parallel criterion searches out similar topography and geomorphology around this well location afterwards, disposes well location, is known as well A among Fig. 1, and equidistant at distance A so and wave structure place that parallel just can determine the A1 similar substantially to the A situation, A2 two wells.B is known, and equidistant at distance B so and wave structure place that parallel just can determine the B1 similar substantially to the B situation, B2 two wells.By that analogy.

Adopt the method for present embodiment,, dispose 30 mouthfuls of oil wells altogether, do not have a bite well to fall through, and 1/3 high-yield well is arranged in conjunction with oil field reality.

Claims

1, a kind of well location dispositions method of oil field development is characterized in that, on known oil field, in trough band and the crossing structure mesh district deployment well location of trough band.

2, the method for claim 1 is characterized in that, described disposed well location around, adopt equidistantly or dispose other well locations like parallel accurate the survey.