CN1040245A - A kind of explanation and processing method of well logging information - Google Patents
A kind of explanation and processing method of well logging information Download PDFInfo
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Abstract
The present invention is a kind of analysis and processing method that is applied in the information data in the geophysical log, the present invention includes two kinds of log interpretation methods, a kind of is to obtain the combined information on stratum with the method for differentiate combination, with the counter again actual formation parameter of obtaining each stratum of these combined informations, second kind is to the radially resistivity of same depth point and the logging method of radially moisture degree of saturation processing, it can eliminate the influence of lithology and the error that logger is brought, two kinds of methods are used, can be used to handle the well logging information under complex lithology and the complex conditions, the coincidence rate of well log interpretation is up to more than 90%.
Description
The present invention is a kind of analysis, processing method that is applied in the information data in the geophysical log.More particularly, be the log interpretation method that is applied in the petroleum exploration and development.That this method can be judged accurately, reliably is fuel-displaced, the position (degree of depth and thickness) of gas, water layer.And can provide reliable physical parameter, project data, rock composition block diagram etc.
Logging technique is widely used in oil, coal, mineral metal products, the hydrogeology work, logging technique is in the face of extremely complicated objective reality, though countries in the world have taked several different methods to handle, the for example SARABAND in west, CORIBAND, GLOBAL logging program etc., but each method all has certain limitation and systematic error.Therefore for a long time, though the well log interpretation process has adopted the digital computer processing, but human factor is still occupied an leading position, experienced explanation personnel comprehensive analytical capacity is strong, it explains that conclusion and actual conditions matching degree are just high, but for new exploratory area, new series of strata, owing to lacking regional experience, explaining that conclusion just tends to occur deviation.Conventional log interpretation method only reaches about 70% for the coincidence rate of sandstone reservoir well log interpretation, well log interpretation coincidence rate for non-sandstone reservoir is just lower, particularly complicated sand shale, igneous rock, carbonate rock, metamorphic rock etc., the coincidence rate of its explanation super only 60%.The lithology influence that these bad grounds produced, F intrusion effect, underground water value are inaccurate, the error of logger, artificial value error etc., have brought a lot of difficulties to well log interpretation.The object of well log interpretation research mainly is the absolute value relation in formation resistivity Rt, the well logging informations such as degree of porosity ∮, water saturation Sw in the prior art, the absolute value of these well logging informations is carried out the correction of error and the mode of progressively approaching is carried out analyzing and processing, the result who does like this, require the certainty of measurement of logger high more good more on the one hand, but this is difficult to reach in practice; Design various and bad ground adapt physical model or mathematic(al) mode according to the absolute error principle again on the other hand, this also is difficult to reach in practice.Therefore in the face of bad ground, under complex conditions, carry out well log interpretation again, and will constantly improve the coincidence rate of well log interpretation.Facts have proved that this has been the long-term unsolved difficult problem of world today's logging technique.
The present invention is directed to insurmountable this difficult problem in the prior art, other keeps away approach, has adopted and the distinct research method of prior art and technology path-method of principle of relativity is applied in the technical field of geophysical log information processing.Method of the present invention is that the object of analysis and research is not the relation of absolute value in the well logging information in the process that well log interpretation is handled, but the relation of previous sampled point and a back relative variation of sampled point in the well logging information.The present invention catches resistivity Rt, Rxo, electrical conductivity Ct, Cxo, degree of porosity ∮, the moisture degree of saturation Sw that plays leading factor in the formation data, and they are carried out differentiate, and a kind of new combined information is obtained out in combination
Degree of porosity information is asked parameters such as complex lithology rock composition.The objective of the invention is to utilize this method to improve the coincidence rate of well log interpretation under complex lithology and the complex conditions.For achieving the above object, present invention includes the means of interpretation that two kinds of well logging informations are handled, these two kinds of methods are used, and the oil, gas, water layer well log interpretation coincidence rate that make complex lithology are up to more than 90%.
The method of these two kinds of well log interpretations is respectively: one, obtain the relative variation relation between the various information in the well logging information with the method for differentiate combination, these variation relations are: resistivity Rt, electric conduction of rock rate Ct, invaded zone of stratum resistivity Rxo, invaded zone of stratum electrical conductivity Cxo be respectively to the variation relation of degree of porosity ∮ and moisture degree of saturation Sw, thereby obtain corresponding stratum combined information
With the counter again formation parameter of obtaining the reality on each stratum of these combined informations (oil-containing satisfy degree, degree of porosity and rock composition).This method is called for short the CDLA log interpretation method.Two, the error of being brought for the influence of eliminating lithology and logger, the variation issue of moisture degree of saturation in fluid properties and its investigative range in the hole of outstanding research rock stratum, the present invention also provides a kind of to the radially resistivity of same depth point and the log interpretation method of radially moisture degree of saturation processing, and this method is called for short the RDLA log interpretation method.These two kinds of methods are used, and can be used to handle the well logging information under complex lithology and the complex conditions.
Accompanying drawing 1 is a CDLA log interpretation method flow chart.
Accompanying drawing 2 is RDLA log interpretation method flow charts.
Accompanying drawing 3 is one of RDLA method interpretation chart collection.
Accompanying drawing 4 is to be the moving coordinate system of variable foundation with degree of porosity ∮ and moisture degree of saturation Sw.
Accompanying drawing 5 is to judge oil (gas) water layer according to RDLA numerical value.
Accompanying drawing 6, accompanying drawing 7 are a kind of oil, gas, water layer line interpretation charts of making according to CDLA and RDLA method.
Accompanying drawing 8 is that this invention can be eliminated the calcareous instance graph that influences automatically.
Accompanying drawing 9 is that this invention can be eliminated shale automatically and influences instance graph.
Accompanying drawing 10 is to compensate for and eliminate mud intrusion effect instance graph automatically.
Accompanying drawing 11 is the instance graphs that can correctly select formation water resistivity Rw.
Accompanying drawing 13 is to judge the Water Flooding Layer instance graph.
Accompanying drawing 14 is to judge the gas-bearing formation instance graph.
Accompanying drawing 15 is production capacity schematic diagrames in the discrimination of reservoir.
Do to describe in detail below in conjunction with accompanying drawing:
Enter the flow process step 12 again, need carry out the calculating of differentiate combination at identical sampled point to various well logging informations, thereby obtain combined information with new physical concept meaning.The process of differentiate combination is: obtain with the difference of the adjacent two sampled point resistivity R of the degree of depth ratio than last its corresponding degree of porosity ∮ and moisture degree of saturation Sw difference.Carry out as follows:
H is the poor of the two sampled point degree of depth.
Can calculate combined information according to above formula.These well logging informations comprise:
1, rock resistivity Rt; 2, rock conductivity Ct; 3, invaded zone of stratum resistance rate Rxo; 4, invaded zone of stratum electrical conductivity Cxo, these well logging informations carry out the differentiate combination to rock porosity ∮ and moisture degree of saturation Sw respectively, thereby obtain corresponding combined information:
The CDLA curve values that these combined informations are just actual can be found out in accompanying drawing 4.As igneous rock, metamorphic rock, carbonatite etc., explain precision at more complicated special formation, can also carry out secondary differentiate combination above-mentioned well logging information in order to improve it.
The combined information that obtains is entered the flow process step 14.In reality is answered, in order to judge oil, gas, water layer, the moving coordinate system (see figure 4) that it is variable that this method has been set up with degree of porosity ∮ and moisture degree of saturation Sw intuitively.This moving coordinate system at first is to utilize existing formulae to obtain the theoretical oily line and the theoretical waterline on this stratum, after oil line, waterline are determined, just can be according to the CDLA value of reality, carry out with the overlapping contrast of dimension, thereby the Shi Ji situation of change of CDLA value curve between oily line of theory and theoretical waterline indicated fuel-displaced (gas) water layer intuitively as can be seen.From accompanying drawing 4 as can be seen, when actual CDLA value curve (is the combined information curve
) overlap with theoretical oily line or when being lower than theoretical waterline, can be judged as water layer, when actual CDLA value curve overlaps with theoretical waterline, or when being higher than theoretical oily line, be judged as oil (gas) layer, when actual CDLA value curve changes, be interpreted as oil (gas) water layer between oily line and waterline with layer, by above step, just can do the well log interpretation of fuel-displaced, gas, water layer.
In order to obtain the in fact parameters such as formation porosity, moisture degree of saturation, oil-containing degree of saturation and permeability of each layer more accurately, by the flow process step 16, with the counter again absolute value of obtaining above-mentioned parameter of combined information.
Run into bad ground, as stratum such as fractured carbonate rock, igneous rock, metamorphic rocks, also have Water Flooding Layer, heavy oil tested layer, mud to invade very dark natural gas reservoir, also must go on foot 18 by flow process, adopt the RLDA log interpretation method, to judge the subsurface picture of complex lithology.
By the flow process step 20, obtain various parameters according to combinations thereof information at last, an exportable end result figure is as Fig. 8-Figure 15.
It is RDLA logging method block diagram that accompanying drawing 2 is described.The RDLA logging method is to use principle of relativity, study the variation relation of the deep investigation resistivity of same survey mark with respect to shallow investigation resistivity, thereby eliminate the lithology influence, the variation issue of moisture degree of saturation in fluid properties in the degree of porosity of outstanding research rock stratum and its investigative range, therefore step 21 be with conventional method measure deeply, the shallow resistivity value, again with these values calculate deeply, the shallow investigation resistivity difference, can obtain RDLA numerical value according to difference: promptly
C＝Rmf×Rw
The moisture degree of saturation of Sw-in the formula, Rmf-invaded zone water resistance rate,
The moisture degree of saturation in Sxo-invaded zone, Rw-rock porosity formation water resistivity.
According to RDLA numerical value, RDLA interpretation chart under the different parameters that can draw.
Accompanying drawing 3 is one of RDLA method interpretation chart collection, from interpretation chart as can be seen when the moisture degree of saturation Sw of prime stratum is low, diagram Sw=20, the RDLA value is very big, and curvilinear motion is also very big, and is opposite, when original moisture degree of saturation Sw is very high, diagram Sw=90, the RDLA value is very little, and curvilinear motion is also very little.Analyze the practical significance of RDLA value, can judge subterranean oil, gas, water layer more intuitively.As shown in Figure 5.
When RDLA＞0, can be judged as oil reservoir,
When RDLA=0, can be judged as water layer,
Invading under the very dark situation:
When RDLA value＜0, and formation water resistivity Rw＞invaded zone water resistance rate Rmf can be judged as gas-bearing formation,
When RDLA value＞0, and formation water resistivity Rw＜invaded zone water resistance rate Rmf can be judged as gas-bearing formation.
By the RDLA means of interpretation, this method can be distinguished Water Flooding Layer better as can be seen, because the moisture degree of saturation Sw of Water Flooding Layer is than higher, the RDLA method also can be used for judging gas-bearing formation simultaneously.
, gas fuel-displaced, water layer in order to distinguish more intuitively, CDLA and RDLA method also can provide a kind of oil, gas of strictness, the characteristic explain plate of water layer according to the present invention, and this plate is seen accompanying drawing 6, accompanying drawing 7.When invading very shallow gas-bearing formation (1), its feature be actual CDLA value curve greater than waterline, calculate the oil-containing degree of saturation greater than more than 50%, the numerical value that the demonstration of RDLA curve is very high.When invading very dark gas-bearing formation (2A), its feature is that the CDLA curve values calculates the oil-containing degree of saturation less than 40% near the water layer line as mud filtrate resistivity Rmf during greater than formation water resistivity Rw, and the RDLA curve values is also very low.As mud filtrate resistivity Rmf during greater than formation water resistivity Rw, figure is (2B), and the CDLA value is equal to or less than waterline value, calculates the oil-containing degree of saturation and equals zero, and negative value phenomenon (seeing Fig. 2 B, RDLA analytic curve 22) appears in the RDLA curve.Common oil reservoir (3), its feature are that the CDLA curve values equals oily line, or are slightly larger than oily line, calculate the oil-containing degree of saturation greater than 50%, and RDLA shows very high numerical value.Water layer (4), its feature are that the CDLA curve values equals waterline, or are slightly larger than waterline, and calculating the oil-containing degree of saturation is zero, or less than 30%, the RDLA value equals zero or is slightly larger than zero.Do layer (5), its feature is that the CDLA curve values equals waterline, or is slightly larger than waterline, calculates that the oil-containing degree of saturation equals zero or less than 30%, RDLA value equals zero or is slightly larger than zero.Water layer and dried layer difference are that the water layer degree of porosity is very big, and actual CDLA value is very little, and then degree of porosity is very little to do layer, and actual CDLA value is very big.Heavy oil tested layer (6), its feature be the CDLA value greater than waterline, and very big, calculate the oil-containing degree of saturation greater than 75%, but the RDLA curve values is smaller.Water Flooding Layer (7), its feature be, if when the salt content of water filling is smaller, the CDLA curve values calculates the oil-containing degree of saturation greater than 60% greater than waterline, but the RDLA value demonstrates near waterline, but do not demonstrated very big numerical value by the component R DLA value of water logging.Complicated fracture-type reservoir and payzone (8), its feature be, during oil-containing, CDLA value near oily line, calculates the oil-containing degree of saturation greater than 80% greater than waterline, and RDLA value curve shows high the value at the payzone position, at non-payzone position demonstration low value.Vertical fracture stratum (9), its feature are that to handle out the CDLA value with the degree of porosity that interval transit time is tried to achieve very big, but it is normal to try to achieve the CDLA value that total porosity handles out with three porosity.If oil reservoir, then the oil-containing degree of saturation is greater than 60%, if water layer, the oil-containing degree of saturation is less than 20%, and the RDLA value is moderate.Level or map cracking (10), its feature is to try to achieve degree of porosity and information processing goes out the CDLA value with interval transit time, and trying to achieve total porosity information with three porosity, to handle out the CDLA value almost equal, and the RDLA value is if oil reservoir, then demonstration is very big, if water layer then shows very little or equals zero.
Carry out step according to the enforcement legend below advantage of the present invention be described:
1, can eliminate systematic error in the well logging information automatically.
Survey in the process and unavoidably exist systematic error, the precision, scale, linearity and the stability that comprise downhole instrument and ground instrument, down-hole humidity changes, various ambient influnences cause error, these errors are difficult for exactly, qualitatively, periodically find, be difficult to proofread and correct, bring error for the conventional logging explanation results, because the present invention adopts principle of relativity and combined information method, makes the result who handles out not be subjected to above-mentioned error effect under certain condition.
2, compensate for and eliminate the lithology influence automatically.
Because objective variation of lithological multiterminal, the lithology influence is a difficult problem in the well log interpretation work, consults accompanying drawing 8 and accompanying drawing 9, knows and finds out that it has obvious setoff or elimination lithology to influence function.
Accompanying drawing 8 can be seen at the end, oil reservoir top all the very thin caliche of one deck, is according to a conventional method to deduct these caliche influences, but has then obviously eliminated its influence by CDLA analysis of the present invention, and it is very little to calculate the oil-containing degree of saturation, outstanding middle oil reservoir.
Accompanying drawing 9, clear it has obvious setoff or eliminates the function that lithology influences as can be seen.
Remove these caliche influences, but then obviously eliminated its influence by CDLA analysis of the present invention, it is very little to calculate the oil-containing degree of saturation, outstanding middle oil reservoir.
Accompanying drawing 9 is * * area * * well in a thin layer group oil reservoir, in the middle of microelectrode shows, three layers of shale thin layer are arranged, conventional means of interpretation can't divide out, can't carry out quantitative interpretation even can divide out also, can obviously find out then that with the present invention these three layers of shale thin layer oil-containing degree of saturation are very low.
3, compensate for and eliminate the mud intrusion effect automatically.
The mud intrusion effect also is a difficult problem in the well logging work.The present invention then has obvious elimination or compensates for the effect of this influence, for example accompanying drawing 10 be * * area * * the 14# well, the result map of handling with the present invention.Can find from result map, concern oil-containing degree of saturation Sw that handles out and the oil-containing degree of saturation Sw ' that deals with shallow penetration curve and degree of porosity relation with deep investigation well curve and degree of porosity, in the same depth place, Sw curve and Sw ' curve be equal and opposite in direction not only, and form too, handled a large amount of wells in the reality, its result also is the same, and this has proved absolutely that the present invention has the function of compensating for and eliminating intrusion effect.
4, can find that formation water resistivity Rw chooses the mistake influence.
New exploratory area, new series of strata formation water resistivity are unclear, the employing indirect method is calculated, often get wrong easily, explain so and will go wrong, show according to statistics, because it is incorrect that formation water resistivity is chosen, causing misdeems accounts for whole various factors and causes 2/3rds of misconstruction.Therefore correctly calculating the formation water resistivity size, is the key that guarantees to explain correctness.But use conventional means of interpretation, even the explanation personnel that know a thing or two, arrive a new exploratory area, run into new series of strata, can only do approximate calculation or judgement by rule of thumb, tend to go wrong, advanced part of the present invention then is that it just can find out in processing procedure whether correct formation water is chosen, when incorrect, just in time correct, so just misconstruction can not occur.Referring to accompanying drawing 11.As can be seen from the figure the CDLA curve overlaps with waterline or oily line, and then RW chooses correctly.
5, the present invention can differentiate the fracture pattern of fracture formation.
Accompanying drawing 12a for * * area * * the 14# well adopts the present invention to deal fracture pattern and the actual well drilled result that cores, as can be seen from the figure, the two conforms to.Figure 12 b is a vertical fracture, and Figure 12 C is a map cracking.
6, can judge Water Flooding Layer.
Accompanying drawing 13 is * * area * *-100# well actual treatment figure, this this layer of well position, explain that with conventional method this layer does not have water logging, the water logging of actual this layer of perforation formation testing, moisture content reaches 75%, the present invention handles the water logging of this layer, and calculating moisture content is 76.2%, can obviously find out waterflooding layer characteristic again from RDLA.Flooded by water layer 4 on the oil reservoir 3.
7, the present invention can judge gas-bearing formation.
8, which can be differentiated is reservoir in the present invention, and which is the payzone of reservoir.
As accompanying drawing 15 be * * area * * well actual treatment figure, this well is fractured limestone and dolomite from 3800 meters to 4050 meters, after handling with the present invention, full well section all has the crack oil and gas layer of different brackets, and the oil-containing degree of saturation is very high.Belong to real fracture development, and fracture connectivity is good, 3918 meters-3945 meters these sections of having only of actual production capacity are arranged, can see the high value of explicitly from the RDLA curve.Actual formation testing result proves that the result that the present invention handles out is right-on, 3918 meters-3945 meters this section formation testings, 2100 tons of daily output crude oil, though other well section oil-containing degree of saturation is very high, but the RDLA value is very low, actual formation testing result produces crude oil daily and has only 0.5 ton, and result of the present invention is judged as extremely low oil-producing formation or does layer.
Claims (3)
1, a kind of CDLA log interpretation method that degree of porosity, oil-containing degree of saturation information is carried out differentiate with resistivity information, this method comprises:
A, with various original well detecting informations, be input in the special-purpose computer by certain form;
B, various original well detecting informations are carried out with being stored in after the depth-sampling in the computer;
The difference of c, the adjacent two sampled point resistivity of the degree of depth of seeking common ground is promptly obtained actual CDLA value curve than the ratio of last its corresponding degree of porosity and moisture degree of saturation difference;
The degree of porosity information that d, utilization are tried to achieve is set up the CDLA oil line of stratum oil-containing degree of saturation theory and the moving coordinate system of the CDLA waterline of theory;
E, carry out with the overlapping contrast of dimension with actual CDLA value curve and theoretical CDLA oil line, CDLA waterline,
F, ask the true oil-containing degree of saturation So on stratum with the actual CDLA absolute value of obtaining.
The fracture pattern that combined information that g, usefulness are handled and relation curve are differentiated fracture formation.
H, export continuously with computer peripheral and to explain that conclusion and data handle curve, these curves comprise stratigraphic section rock composition curve and fracture pattern curve.
2, a kind of RDLA log interpretation method of analyzing stratum warp-wise change in resistance and the variation of stratum warp-wise oil-containing degree of saturation, this method comprises:
A, use conventional method measure dark, shallow or dark in shallow resistance value, ask for the n variance that the moisture degree of saturation of identical sampled point changes;
B, set up the oil-containing degree of saturation that RDLA interpretation chart collection is determined actual formation;
C, utilize the RDLA interpretation chart to determine the ability of oil, gas, water and produce oil thereof, aerogenesis, product water.
3, according to the log interpretation method of claim 1 and 2, wherein also comprise a kind of oil, gas of strictness, the interpretation chart of water layer feature, this plate comprises: 1, invade very shallow gas-bearing formation; 2, invade very shallow gas-bearing formation; 3, common oil reservoir; 4, water layer; 5, do layer; 6, heavy oil tested layer; 7, Water Flooding Layer; 8, complicated fracture-type reservoir and payzone; 9, vertical fracture stratum; 10, horizontal mesh crack.
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| CN88104479A CN1032663C (en) | 1988-07-25 | 1988-07-25 | Explanation and processing method for well logging information |
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| CN88104479A CN1032663C (en) | 1988-07-25 | 1988-07-25 | Explanation and processing method for well logging information |
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| WO2010148628A1 (en) * | 2009-06-22 | 2010-12-29 | 中国石油天然气股份有限公司 | Quantitative calculation method for hydrocarbon saturation of fractured reservoir |
| CN103206207A (en) * | 2013-03-01 | 2013-07-17 | 陕西延长石油(集团)有限责任公司研究院 | Favorable oil reservoir region identification method based on hydrocarbon generation period ancient structure |
| CN104747163A (en) * | 2013-12-31 | 2015-07-01 | 中国石油天然气股份有限公司 | Method and device for identifying reservoir fractures in tight sandstone |
| CN105317427A (en) * | 2014-06-05 | 2016-02-10 | 中国石油化工股份有限公司 | Representation method for describing old fault top surface structure diagram |
| CN105443122A (en) * | 2015-12-28 | 2016-03-30 | 中国石油天然气股份有限公司 | Processing method and device of well logging interpretation model |
| CN106285656A (en) * | 2015-06-09 | 2017-01-04 | 中国石油化工股份有限公司 | For determining the method and system of the free gas saturation of shale gas reservoir |
| CN110017136A (en) * | 2019-03-14 | 2019-07-16 | 中国石油天然气集团有限公司 | A kind of Water Flooding Layer identification and producing water ratio prediction technique based on view water layer resistivity |
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1988
- 1988-07-25 CN CN88104479A patent/CN1032663C/en not_active Expired - Fee Related
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| WO2010148628A1 (en) * | 2009-06-22 | 2010-12-29 | 中国石油天然气股份有限公司 | Quantitative calculation method for hydrocarbon saturation of fractured reservoir |
| US8805661B2 (en) | 2009-06-22 | 2014-08-12 | Petrochina Company Limited | Quantitative calculation method for oil (gas) saturation of fractured reservoir |
| CN103206207A (en) * | 2013-03-01 | 2013-07-17 | 陕西延长石油(集团)有限责任公司研究院 | Favorable oil reservoir region identification method based on hydrocarbon generation period ancient structure |
| CN103206207B (en) * | 2013-03-01 | 2015-06-17 | 陕西延长石油(集团)有限责任公司研究院 | Favorable oil reservoir region identification method based on hydrocarbon generation period ancient structure |
| CN104747163B (en) * | 2013-12-31 | 2017-10-17 | 中国石油天然气股份有限公司 | Method and device for identifying reservoir fractures in tight sandstone |
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| CN105317427A (en) * | 2014-06-05 | 2016-02-10 | 中国石油化工股份有限公司 | Representation method for describing old fault top surface structure diagram |
| CN106285656A (en) * | 2015-06-09 | 2017-01-04 | 中国石油化工股份有限公司 | For determining the method and system of the free gas saturation of shale gas reservoir |
| CN105443122A (en) * | 2015-12-28 | 2016-03-30 | 中国石油天然气股份有限公司 | Processing method and device of well logging interpretation model |
| CN105443122B (en) * | 2015-12-28 | 2019-01-18 | 中国石油天然气股份有限公司 | Processing method and device of well logging interpretation model |
| CN110320572A (en) * | 2018-03-29 | 2019-10-11 | 中国石油化工股份有限公司 | A kind of method and system identifying sedimentary facies |
| CN110320573A (en) * | 2018-03-29 | 2019-10-11 | 中国石油化工股份有限公司 | A kind of log parameter construction method and system reflecting reservoir productivity |
| CN110320572B (en) * | 2018-03-29 | 2021-04-23 | 中国石油化工股份有限公司 | Method and system for identifying sedimentary facies |
| CN110320573B (en) * | 2018-03-29 | 2021-05-25 | 中国石油化工股份有限公司 | Logging parameter construction method and system reflecting reservoir productivity |
| CN110344822A (en) * | 2018-04-03 | 2019-10-18 | 中国石油天然气股份有限公司 | Determination method of water saturation of calcareous compact reservoir |
| CN110344822B (en) * | 2018-04-03 | 2022-06-03 | 中国石油天然气股份有限公司 | Determination method of water saturation of calcareous compact reservoir |
| CN110017136A (en) * | 2019-03-14 | 2019-07-16 | 中国石油天然气集团有限公司 | A kind of Water Flooding Layer identification and producing water ratio prediction technique based on view water layer resistivity |
| CN110017136B (en) * | 2019-03-14 | 2023-01-10 | 中国石油天然气集团有限公司 | Water flooded layer identification and water production rate prediction method based on apparent water layer resistivity |
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