... the system more efficiently than one. The wireline system has greatly reduced the time to acquire core samples compared to conventional drilling techniques. Further, we have developed this system so that core barrels may be exchanged for scientific probes, such as the cone penetration test (CPT), without...

... included both soft sediments and hard rocks. After drilling a 2.35 m section the core is recovered using a wire that is latched to the inner core barrel with an overshot. The outer drill string stays in the drilled hole during the entire drilling process. Recently, simple self-contained borehole...

... rig otc 23395 investigation market drill rig offshore technology conference upstream oil & gas polymer diameter drill tool drill rod drilling operation drilling equipment rig core barrel rovdrill mk drill string sampler upgrade OTC 23395 Development of the ROVDrill Mk.2 Seabed...

... penetration well intervention core retainer underpressure completion installation and operations diameter seabed sampler sampler core barrel strength water depth production enhancement sample quality piston friction interface shear strength liner subsea system laboratory test upstream oil...

... storage cavern mud system platform drilling operation core barrel otc 19699 borehole offshore exploration borehole drilling technology andy frazer sodium chloride gas storage installation excalibur offshore technology conference storage cavern OTC 19699 An Alternative Approach...

... Abstract The Integrated Ocean Drilling Program (IODP) has developed an 8-1/4' instrumented drill collar with a 4-1/8' I.D. forroutine use in the programâ??s global coring program. An inductive data link to an instrumented core barrel has been added to acquire coring data in both core barrel...

... swivel mounted between the vibrator and rotary drive sections. This serves to lubricate the barrels, purge sand, and provide water to the rotary bit, at the point of exit. Other design features include a hydraulic cylinder, sheave, and cable arrangement for remote drill system/core barrel assembly pull...

..., the Project developed sampling tools to recover high quality samples of deep sea sediment, sedimentary rock, and igneous rock. ocean drilling program deep water observatory scientific ocean drilling cork core sample drilling operation borehole sediment reservoir characterization core barrel...

.... Commonly, the coring tools are designed for deployment down the inside of the main drill string (4-1/8" min. diameter) and are sized around the "HQ", 3-1/2" nominal core barrel systems from the mining industry. These tools and core barrels are retrieved via wireline. The BHA provides a landing shoulder...

... and other seabed consolidated deposits. These systems utilize technology similar to that used by the oil industry in side-wall coring devices which recover samples from the walls of exploration drill holes. Samples are taken by firing short, hollow core barrels, using small explosive charges, into a variety...

... has undertaken the development of a multisample crust coring system. seafloor metals & mining firing deployment core barrel core gun firing plate wiring harness ferromanganese crust deposit deposit otc 5235 seamount crust deposit sampler completion installation and operations...

... exploration and drilling. water depth sediment protector requirement reentry cone upstream oil & gas guideshoe top drive modification drilling operation objective ocean drilling program ship sedco 471 core barrel hammett drilling odp drillpipe OTC 4990 Ocean Drilling Program...

... ABSTRACT In December of 1978, the Deep Sea Drilling Project, International Phase of Ocean Drilling, deployed the first hydraulically actuated piston corer. This coring system utilized a hydraulic piston principle. Fluid was pumped through the drill pipe, activating a piston driven core barrel...

... instability. Study of the effects of gas on sediment properties has been severely hampered by disturbances to cores as they decompress when brought to the surface. This paper describes a recently developed pressurized core barrel which can sample the gas-charged sediments and maintain them at the downhole...

... retrieval tool core barrel naval civil engineering laboratory sampler tube corer cable drill pipe drilling operation assembly seafloor piston drilling vessel sampler turret drill head OFFSHORE TECHNOLOGY CONFERENCE 6200 North Central Expressway Dallas, Texas 75206 THIS IS A PREPRINT SUBJECT...

... bottom joint around the core barrel so that the sample is not washed. A square rod extending from the top of the coring unit retains the rotation of the core barrel. This square rod also supports a piston in thecore barrel, thus affecting "fixed piston" coring. A hydraulic powerhead produces 1,000 ft-lb...

... technology conference essway number 0 institute core barrel engineer dallas upstream oil & gas connecticut river photograph sediment land area reservoir characterization aircraft research laboratory engineering corporation coastal state drilling operation island paper 6200 OFFSHORE...