| Patents for E21B 49 - Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells (11,875) |
|---|
| 09/28/1999 | US5959547 Well control systems employing downhole network |
| 09/28/1999 | US5959203 Method for automatic identification of the nature of a hydrocarbon production well |
| 09/28/1999 | US5957221 Downhole core sampling and testing apparatus |
| 09/28/1999 | CA2155917C Early evaluation by fall-off testing |
| 09/16/1999 | DE19811699A1 Sub soil gas sampling probe of modular construction |
| 09/15/1999 | EP0942148A2 Apparatus for sampling fluids |
| 09/14/1999 | US5950741 Extended soil sampling head |
| 09/10/1999 | WO1999045236A1 Formation testing apparatus and method |
| 09/10/1999 | WO1999045234A1 A non-rotating sensor assembly for measurement-while-drilling |
| 09/09/1999 | CA2265048A1 Self-locking connector |
| 09/07/1999 | US5949069 Method and apparatus for measuring volumetric water flow rates in highly inclined wellbores |
| 09/07/1999 | CA2174804C Formation fluid flow rate determination method and apparatus for electric wireline formation testing tools |
| 09/01/1999 | EP0939195A2 Apparatus and method for determining a drilling mode to optimize formation evaluation measurements |
| 09/01/1999 | CN2336094Y Core drilling rig |
| 08/24/1999 | US5941305 Real-time pump optimization system |
| 08/24/1999 | US5941121 For measuring liquid pressure |
| 08/17/1999 | US5939330 Repetitively testing liquid samples; for monitoring radioactive contamination around nuclear reactors |
| 08/17/1999 | US5937953 Soil sampling tool with unique vent-and-seal features and related method |
| 08/12/1999 | WO1999040532A1 Improved process for predicting behavior of a subterranean formation |
| 08/12/1999 | WO1999040530A1 Method for predicting pore pressure in a 3-d volume |
| 08/10/1999 | US5937363 Method for calculating the distribution of fluids in a reservoir |
| 08/10/1999 | US5937362 Method for predicting pore pressure in a 3-D volume |
| 08/10/1999 | US5934375 Deep well sample collection apparatus and method |
| 08/10/1999 | US5934374 Formation tester with improved sample collection system |
| 08/10/1999 | US5934371 Remotely controlled shut-off valve and variable choke assembly |
| 08/03/1999 | US5931235 Cutter head, boring jig and device and process for sea bottom boring |
| 07/20/1999 | CA2155916C Early evaluation system |
| 07/13/1999 | US5924048 Automated material balance system for hydrocarbon reservoirs using a genetic procedure |
| 07/13/1999 | US5922975 For communicating with underground fluids located at different locations |
| 07/13/1999 | US5922950 Depth-discrete sampling port |
| 07/13/1999 | US5922559 Biological systems particularly suitable for this invention are bioremediation, biologically enhanced oil recovery, biological leaching of metals, and agricultural bioprocesses. |
| 07/06/1999 | US5918670 Multi-sensor relief valve well test system |
| 06/29/1999 | US5915476 Monitoring well |
| 06/23/1999 | CN2325515Y Device for testing pressure of pipe string and well completion column |
| 06/15/1999 | CA2255264A1 Multi-screen groundwater monitoring well system |
| 06/10/1999 | DE19748580C1 Combination geotechnical depth probe with detachable probe head |
| 06/08/1999 | US5909772 Apparatus and method for estimating liquid yield of a gas/condensate reservoir |
| 06/01/1999 | CA2006926C Recovery simulation pilot process for a hydrocarbon deposit |
| 05/20/1999 | WO1998053173A3 Improvements relating to strata logging on computer |
| 05/19/1999 | EP0916014A1 Apparatus and method for milling a hole in casing |
| 05/18/1999 | US5905036 Characterization of organic contaminants and assessment of remediation performance in subsurface formations |
| 05/12/1999 | EP0915331A2 Method for pyrolytic analysis of reservoir rock for predicting the oil-production characteristics |
| 05/11/1999 | US5902939 Penetrometer sampler system for subsurface spectral analysis of contaminated media |
| 05/11/1999 | US5901788 Well fluid sampling tool and well fluid sampling method |
| 05/06/1999 | WO1999022114A1 Method and apparatus for shutting in a well while leaving drill stem in the borehole |
| 05/05/1999 | CN1215789A Well system |
| 05/04/1999 | US5900545 At depths in subterranean rock formations in the earth |
| 05/04/1999 | US5900544 System and method for detecting upward growth of a hydraulic subterranean fracture in real time |
| 04/28/1999 | EP0911485A2 Formation evaluation testing apparatus and method |
| 04/28/1999 | EP0911483A2 Well system including composite pipes and a downhole propulsion system |
| 04/28/1999 | EP0910725A1 Wellbores utilizing fiber optic-based sensors and operating devices |
| 04/27/1999 | US5896926 Packer type groundwater sampling system and water sampling method |
| 04/21/1999 | EP0909877A1 Well tool for downhole formation testing |
| 04/21/1999 | CN1214757A Method of assaying compressive strength of rock |
| 04/21/1999 | CN1214756A Method and sytsem for monitoring characteristic of earth formation in well |
| 04/21/1999 | CN1214754A Method of assaying downhole occurrences and conditions |
| 04/15/1999 | WO1999000575A3 Drilling system with sensors for determining properties of drilling fluid downhole |
| 04/14/1999 | EP0908600A2 Formation testing apparatus |
| 04/14/1999 | CA2250317A1 Early evaluation system with drilling capability |
| 04/13/1999 | US5894080 Use of a sampling apparatus for calibrating electronic mass/flow fraction meters in a pipeline |
| 04/07/1999 | EP0906491A1 Method and apparatus for testing, completing and/or maintaining wellbores using a sensor device |
| 04/06/1999 | US5891829 Process for the downhole upgrading of extra heavy crude oil |
| 04/06/1999 | US5890542 Apparatus for early evaluation formation testing |
| 04/01/1999 | WO1998057143A3 Soil testing assemblies |
| 03/30/1999 | US5889587 Mobile inductively coupled plasma system |
| 03/30/1999 | US5889217 Process and apparatus for obtaining samples of liquid and gas from soil |
| 03/30/1999 | US5887668 Wellbore milling-- drilling |
| 03/30/1999 | US5887657 Pressure test method for permanent downhole wells and apparatus therefore |
| 03/30/1999 | US5887655 Wellbore milling and drilling |
| 03/30/1999 | US5887652 Method and apparatus for bottom-hole testing in open-hole wells |
| 03/24/1999 | EP0903464A2 Well fluid sampling apparatus |
| 03/23/1999 | US5884714 Method and apparatus for fluid and soil sampling |
| 03/23/1999 | CA2247791A1 Non-flashing downhole fluid sampler and method |
| 03/16/1999 | US5881811 Modeling of interactions between wells based on produced watercut |
| 03/09/1999 | US5878813 Apparatus and method for capturing and retrieving liquid sample using a weighed sampling device |
| 03/03/1999 | CN1209500A Method and apparatus for measuring well characteristics and stratum properties |
| 03/03/1999 | CN1209499A Array-electrode-series imaging well-logging method |
| 03/02/1999 | US5875840 Multiple test cased hole formation tester with in-line perforation, sampling and hole resealing means |
| 02/24/1999 | CN1208809A Formation data sensing with deployed remote sensors during well drilling |
| 02/18/1999 | WO1999007975A1 Method and apparatus for drilling and completing wells |
| 02/18/1999 | CA2268256A1 Method and apparatus for drilling and completing wells |
| 02/17/1999 | EP0897049A2 Method and apparatus for determining formation pressure |
| 02/16/1999 | US5871053 Method for improving oil recovery from a formation using hydrocarbon analysis of the fluid produced therefrom |
| 02/10/1999 | EP0896126A2 Method and apparatus for testing a well |
| 02/09/1999 | US5869755 Using a shear modulus to determine spherical porosity in carbonate rock formations without the need to know the pore fluid composition |
| 02/09/1999 | US5868201 Computer controlled downhole tools for production well control |
| 02/04/1999 | WO1998050680A3 Monitoring of downhole parameters and tools utilizing fiber optics |
| 02/04/1999 | CA2244532A1 Method and apparatus f0r bottom-hole testing in open-hole wells |
| 02/03/1999 | EP0895097A2 A method and apparatus for measuring well characteristics and formation properties |
| 02/03/1999 | CN1206778A Method and apparatus for locating indexing systems in cased well and conducting multilateral branch operations |
| 02/02/1999 | US5866814 Pyrolytic oil-productivity index method for characterizing reservoir rock |
| 01/27/1999 | CN2305486Y Wellhead sampler |
| 01/26/1999 | US5864057 Method and apparatus for conducting well production tests |
| 01/21/1999 | WO1999002819A1 Computer controlled injection wells |
| 01/13/1999 | EP0890014A1 Method and system for monitoring a characteristic of an earth formation in a well |
| 01/12/1999 | US5859430 From a formation traversed by a borehole |
| 01/12/1999 | US5859367 Method for determining sedimentary rock pore pressure caused by effective stress unloading |
| 01/07/1999 | WO1999000575A2 Drilling system with sensors for determining properties of drilling fluid downhole |
| 01/07/1999 | EP0889198A2 Method of measuring in situ strength characteristics of downhole formations |
| 12/30/1998 | WO1998059146A1 Earth formation surveying device |