Core-data interpretation in reservoir 

 characteristics — Cent, 

 oil sands, 310 



oil-saturated limestone, 311 



transitional zones, 313 



water sands, 313 



zones of secondary migration of 

 water, 314 

 Core samples, 299 



physical characteristics of, 299 



types of, 299 

 Core sampling, 296 

 Coring techniques and applications, 609 



conventional coring, 609 



core-analysis data, 624 



correlation with electric logging, 623 



diamond coring, 612 



geologic and development 

 problems, 619 



limitation in geologic problems, 623 



production work, 621 



reverse-circulation coring, 615 



side-wall coring, 617 



types of coring, 609 



wire-line coring, 615 

 Correlations, 60 



difficulties, 69 



indicators, 68 



magnitude of, 68 



methods of, 64 



purposes of, 64 

 Cuttings samples examination, 352 



oil stain, 356 



permeability, 356 



porosity, 356 



use of in limestone-reservoir 

 studies, 358 

 Deep-well camera, 664 



camera, 667 



equipment, 666 



future developments, 673 



operating equipment, 670 



principle of operation, 664 



stereoscopic pairs, 676 

 Deflection tools, orientation of, 519 



bottom-hole orientation, 519 



drill-pipe alignment, 519 

 Detrital mineralogy, 116 



choice of methods, 117 



color, 121 



composition, 125 



grain roundness, 135 



grain size, 121 



heavy minerals, 131 



megascopic and binocular 

 examination, 119 



minor minerals, 138 



orientation, 125 



porosity and permeability, 129 



rock types, 128 



Detrital mineralogy — Cont. 



shape and roundness, 122 



structure, 128 



subsurface samples, 118 



surface texture, 124 



texture, 127 



thin sections, 139 

 Diatoms, 101 

 Dipmeter, 625 



areas of application, 627 



basic principles, 625 



field procedure, 627 

 Dipmeter surveys, 628 



applications, 625, 629 



areas of application, 627 



field procedure, 627 



interpretation, 628 



selection of levels, 629 

 Directional drilling, 504 



applications, 533 



directional well planning, 527 



directional well types, 525 



equipment, 504 



orientation of deflecting tools, 519 

 Directional-drilling applications, 533 



business and residential areas, 540 



faults, 546 



inland waters, 539 



mountainous terrain, 539 



multiple well, 544 



offshore drilling, 544 



offshore structures, 533 



relief wells, 537 



salt domes, 537 

 Directional-drilling equipment, 504 



knuckle joint, 510 



removable whipstock, 505 



spudding bit, 516 

 Directional well planning, 527 

 Directional well types, 525 

 Disconformity, 33 

 Driller's logging, 475 



interpretation, 477 



terminology, 475 

 Drilling fluids, 713 



chemical treatment of, 718 



general comment on, 723 



lost circulation, 722 



properties of drilling muds, 714 



temperature effects on, 721 



types of, 722 

 Drilling-time logging, 455, 478 



definitions, 456 



drilling rate, 459 



drilling time, 459 



drilling-time logs, 462 



geolograph, 482 



Log-0-Graf, 486 



Martin-Decker recorder, 486 



types of recorders, 482 



value in diagnosing lithology, 457 



