HIGH S AND LOW S

0
0
2656 days ago, 707 views
PowerPoint PPT Presentation

Presentation Transcript

Slide 1

Rising above CONVENTIONAL LOG INTERPRETATION-A MORE EFFECTIVE APPROACH FOR SPRABERRY RESERVOIR Pioneer Natural Resources DICMAN ALFRED M.S Texas A&M University

Slide 2

LOCATION

Slide 3

HIGH'S AND LOW'S At slightest 15% of all oil staying in class 3 (slant bowl and clastic bowl) supplies might be in the Spraberry drift Estimated 6 billion bbl oil stay in Spraberry stores Waterflooding was started in 1950's without much achievement Current extreme recuperation is no more prominent than 10% of unique oil set up Presence of cracks affects execution

Slide 4

OBJECTIVES To break down logs viably and decide normal water immersion To build up pay zones and shorts To suggest a reasonable logging program

Slide 5

Absence of clean water bearing zones Fractured Nature of the Formation Lack of Rw esteem to set up water immersions utilizing the models accessible as a part of the business CHALLENGES Models Archie Simandaux Dual water Waxman-Smits Indonesian

Slide 6

SPRABERRY MAKEUP-LOOKS COMPLICATED ??

Slide 7

1U PAYZONE MINERALIZED FRACTURE

Slide 8

METHODOLGY DATA GATHERING DATA EDITING CORE ANALYSIS LITHOLOGY DETERMINATION SOFTWARE PRIZM ® DETERMINATION OF POROSITY EXPONENT m

Slide 9

P ½ CALCULATION AND PLOT DETERMINATION OF P ½ MEAN DETERMINATION OF WATER SATURATION RECOMMEND LOGGING PROGRAM

Slide 10

Why is grid thickness is so indispensable for the examination of cracked zones ?? Thickness porosity is given By tradition SANDSTONE 2.65 GM/CC LIMESTONE 2.71 GM/CC DOLOMITE 2.87 GM/CC

Slide 11

INGREDIENTS FOR SUCCESS True network thickness can be resolved From center investigation From complex mineral lithology plots (utilizing programming bundles) By interchange amongst Hingle and Pickett plot (which likewise gives the cementation part "m")

Slide 12

Determination of framework thickness from center Matrix thickness

Slide 13

4 MINERAL PLOT USING PRIZM ® Shale streak marker

Slide 14

LITHOLOGY 1U WELL#37 The focuses fall in the sandstone area

Slide 15

HINGLE AND PICKETT INTERPLAY Assume "m" Find ρ mama Hingle Pickett m Log(ρ mama - ρ b ) ( 1/R t ) (1/m) ρ mama ρ b Log(R t) Estimate "m" Estimate "m" Hingle Pickett Find ρ mama ( 1/R t ) (1/m) m Log(ρ mama - ρ b ) ρ mama ρ b Log(R t)

Slide 17

(  m -  b ) ,GM/CC R t , OHMM Hey!!! That is a broken arrangement—Why?? m = 1.2

Slide 18

COMPARISON IN WELL # 39 5U Sonic  Core  Core  Effective  Density  Density 

Slide 19

AVERAGE WATER SATURATION Calculated utilizing a measurable parameter P ½, initially presented by Porter, Pickett and Whitman. Experimentally, P ½ has a typical circulation for interims which are loaded with water. Interims with some hydrocarbon immersion go astray from the ordinary dispersion. The parameter is characterized by If Sonic Log is utilized,

Slide 20

Hydrocarbon zones Non-profitable zones

Slide 21

P ½ mean

Slide 22

Hydrocarbon zones Non-beneficial zones

Slide 23

DETERMINATION OFAVERAGE WATER SATURATION Resistivity Index Conventional Water immersion is given by

Slide 24

WELL # 39 1U Sw BVW OIL

Slide 25

5U

Slide 26

Comparison of Core versus Porosity 1U Well#37 Core  Core  Effective  Density 

Slide 28

Non gainful Zones P 1/2 mean Cummulative recurrence

Slide 29

1U Density caliper lost contact 5U

Slide 30

WELL #37 Sw 1U BVW OIL

Slide 31

5U

Slide 33

CONCLUSIONS The Density log inferred porosity is found to roughly correspond with center porosity after reasonable rectifications. The water immersion got from factual parameter P ½ gives adequate qualities contrasted with alternate models utilized as a part of the business . Sonic log gave preferred results over thickness log. This technique can be utilized in developments whose Rw is hard to get. The payzones and shorts can be built up from the immersion values

Slide 34

RECOMMENDATIONS A perfect Logging Suite for the Spraberry Trend will be Spectral Gamma log Density log Sonic log Induction log

SPONSORS