Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B49/00—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
  • E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
  • E21B49/084—Obtaining fluid samples or testing fluids, in boreholes or wells with means for conveying samples through pipe to surface
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
  • E21B43/02—Subsoil filtering
  • E21B43/08—Screens or liners
  • E21B43/082—Screens comprising porous materials, e.g. prepacked screens
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N1/00—Sampling; Preparing specimens for investigation
  • G01N1/02—Devices for withdrawing samples
  • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
  • G01N1/14—Suction devices, e.g. pumps; Ejector devices

Definitions

• the invention relates to a production method according to the preamble of claim 1.
• the invention also relates to a device for carrying it out
• Drilling of boreholes which has taken in water from the surrounding mountains or from already sunk water-bearing horizons, and therefore unconditionally for contaminated soils
• the method according to the invention allows such falsifications of the sample water to be suppressed and thus the assessment of which water qualities can be expected from which samples.
• This filter sand body holds, namely with its upper section surrounding a Vollmanuelrohr of the hollow rod solid parts from the flushing and thereby clogs, whereby a natural ring seal against the water-bearing horizon, where the
• Filter sand is held back by the rods.
• the boom has a plurality of boom perforation pipes at a distance from the water-bearing layers, under each of which is arranged a catch device that can be blocked by the borehole butt, which is extended by lifting the boom and then the attached filter sand holds back, so that the mentioned hollow cylindrical
• Filpersand Economics can be built. This previously known method can generally only be carried out with two rods which have to be inserted alternately or one after the other into the borehole. The linkage required for the test pulling is relatively complicated and requires knowledge of
• the invention has for its object that
• the drill string itself is used except for opening the test bore for pumping out the
• the invention has the advantage that, according to the method proposed by her, unadulterated water samples can be obtained as required during the drilling of the well, which can be done without pulling the
• the method according to the invention is therefore particularly well suited as an examination method for unknown soils with possibly unknown loads from contaminating substances.
• Fig. 1 schematic and partially in longitudinal section
• FIG. 2 shows a perforation drill pipe according to the invention for carrying out the drilling operation in an enlarged representation compared to the representation in FIG. 1,
• FIG. 4 shows the subject of FIG. 2 in an enlarged representation for the reproduction of a detail of the perferation linkage
• Fig. 6 is a safety gear for the subject of
• FIG. 7 shows the safety gear in the drill pipe according to FIG. 2,
• FIG. 8 shows a solid pipe insert according to the invention for the embodiment according to FIGS. 1 to 2.
• the perforations (7) are in a variety of
• Perforation tube insert (10) that holds back the filter sand, so that only free water from the filter sand in the
• the perforation tube insert (10) and the perforation drill pipe (6) are connected to each other via locking bolts (11) and a holder (12), so that the e-seat of the perforation tube insert (10) in the rod perforation tube (6) is ensured. Openings (13) are provided in the perforation insert (10), in the example shown in FIG. 5, longitudinal slots approximately 0.5 mm wide, so that the correspondingly coarser filter sand of the filter sand body (8) is effective
• the catching device (15) has draw bolts (16) which engage in the recesses (17) in the inner wall (18) of the perforated tube insert (10) and via which the catching device (15) is able to catch the entire perforated tube insert (10). through the drilling to lift the linkage (4) out.
• mounting bolts (19) which, like the tension bolts (16), are loaded via springs (20) so that they are each in the direction of the perforated tube insert
• closure (22) which serves to prevent the water to be examined from inadvertently flowing into the rod interior (23) bypassing the filter sand body.
• the closure (22) acts like a check valve.
• Fig. 6 shows a catching device with draw bolts (16) and installation bolts (19).
• the two stains (16, 19) are loaded via springs (20). They protrude from the
• Fig. 7 shows the lower region of the drill pipe (4), the immediately above the safety device (15)
• Solid jacket tube insert (30) is lifted into the area of the rod perfusion tube (6).
• the perforations (7) in the perfection rod assembly (6) are then closed via this tube insert (30).
• the Vellmantel turning insert (30) has reached its prescribed position. Around this the insertion bolts (19) on the insert edge (25) according to FIG. 3. As a result, the Vellmantel turning insert (30) is brought into the required end position in any case.
• the safety device (15) is lowered into the insert, with the installation bolts retracted or retracting (19). As soon as the pull bolts (16) snap into the pull groove (25), the installation bolts (19), as can be seen in FIG. 1, are out of function. The safety device (15) can be withdrawn, taking the solid casing insert (30) with it.
• the limitation (31) on the inner wall (32) prevents the safety device (15) from being pushed in too far, for example into the solid casing insert (30).
• a snap ring (36) is used to hold a filter tube (37), preferably made of plastic, in the perforation linkage (6).
• the filter tube preferably made of plastic
• Fig. 2 shows the inserted rotary vellum insert (30), which carries an O-ring seal (41, 42) at its upper and lower ends. This is
• FIG. 3 shows the perforated tube insert (10) used, which also has an O-ring seal (43, 44) at the upper and lower ends.
• the perforations (45) correspond to the size and free area of the filter sand.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Chemical & Material Sciences (AREA)
• Biochemistry (AREA)
• Health & Medical Sciences (AREA)
• Analytical Chemistry (AREA)
• Dispersion Chemistry (AREA)
• General Health & Medical Sciences (AREA)
• General Physics & Mathematics (AREA)
• Immunology (AREA)
• Pathology (AREA)
• Hydrology & Water Resources (AREA)
• Sampling And Sample Adjustment (AREA)
• Earth Drilling (AREA)
• Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
• Optical Measuring Cells (AREA)
• Centrifugal Separators (AREA)
• Drilling And Exploitation, And Mining Machines And Methods (AREA)
• Filtration Of Liquid (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Separation Using Semi-Permeable Membranes (AREA)

Applications Claiming Priority (4)

Publications (1)

Family

ID=25881181

Family Applications (1)

Country Status (15)

Cited By (2)

Families Citing this family (16)

Citations (4)

Family Cites Families (3)

• 1989
  • 1989-12-18 DE DE3941763A patent/DE3941763A1/de active Granted
• 1990
  • 1990-05-19 DK DK90109574.5T patent/DK0399426T3/da active
  • 1990-05-19 DE DE9090109574T patent/DE59002158D1/de not_active Expired - Fee Related
  • 1990-05-19 AT AT90109574T patent/ATE92586T1/de not_active IP Right Cessation
  • 1990-05-19 EP EP90109574A patent/EP0399426B1/de not_active Expired - Lifetime
  • 1990-05-19 ES ES90109574T patent/ES2062166T3/es not_active Expired - Lifetime
  • 1990-05-21 US US07/526,286 patent/US5097914A/en not_active Expired - Fee Related
  • 1990-05-22 NO NO902253A patent/NO174596C/no unknown
  • 1990-05-22 FI FI902530A patent/FI92239C/fi not_active IP Right Cessation
  • 1990-05-23 RU SU904830129A patent/RU2003793C1/ru active
  • 1990-05-23 CA CA002033173A patent/CA2033173A1/en not_active Abandoned
  • 1990-05-23 PL PL90285302A patent/PL165328B1/pl unknown
  • 1990-05-23 JP JP2133685A patent/JPH0376991A/ja active Pending
  • 1990-05-23 WO PCT/EP1990/000832 patent/WO1990014498A1/de active Application Filing
  • 1990-05-23 HU HU903151A patent/HU206756B/hu not_active IP Right Cessation
  • 1990-12-17 MY MYPI90002190A patent/MY104602A/en unknown

Patent Citations (4)

Also Published As

Similar Documents

Legal Events