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Publication numberUS2314540 A
Publication typeGrant
Publication dateMar 23, 1943
Filing dateDec 30, 1941
Priority dateDec 30, 1941
Publication numberUS 2314540 A, US 2314540A, US-A-2314540, US2314540 A, US2314540A
InventorsHuntington Richard L
Original AssigneePhillips Petroleum Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Apparatus for measuring volume of bottom hole portion of well bores
US 2314540 A
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Description  (OCR text may contain errors)

lVlairchQEZ,1943.

R. L. HUNTlNGTON 2,314,540

APPARATUS FOR MEASURING VOLUME OF BOTTOM HOLE IORTION 0F WELL BORES Filed Dec. 30, 1941 R. L. HUNTINGTON A'ITORN Y v with a compressor .20, and av lume Patented him 23,1943:

UNITED STATES memorriqa I I 'srranarusroatr tzgamavonm or of Delaware no'r'romnonnroa'rron or WEILBORES- meme n Huntington, Norman,

to Phillips Petroleum Company,

th., assignor a corporation Application December 30, 1941: Serial No. 425,009

2 Claims.

' This invention relates to the exploration-ct wells and more particularly to apparatus for determining the size oi various cavities, including bottom hole cavities of well bores.

In present-day practice in the petroleum industry, a knowledge of the size of cavities in well bores is desirable in order that an operators procedure for producing hydrocarbon oil and gas may be simplified and made less expensive. A few of the instances wherein the size of the cavity in a well bore should be known by an opere ator are during the gravel packing of a well bore and during the tam'ping' of'an explosive charge in a borev hole preliminary to discharging. the

same. operations, such as gravel packing, it is custom- Ordinarily in carrying out'various well 1 ary that'suppliesl of materials in excess or the amount estimated to be essential be kept on hand. By knowing the volume or a particular well cavity, the operator can secure exact quantities of supplies that will be the hauling cost and investment-in excess materials. Further, by ascertaining bore hole prior to shooting" a well and after the cleaningout process, an operator is able to determine the efiectiveness of the shot,

By the practice of my instant invention, I am able to more accurately determine the size of a' well cavity than with present-day apparatus, and moreover, I may do this readily and economically,

It is therefore the primary object of my invention to provide apparatus for effectively determining the size of various cavities, including. bottom hole cavities of well bores, Other important objects and advantages obtainable by practice of my present invention will be apparent to persons skilled in the art by reference to the following description and annexed drawing which is an elevation view of a preferred embodiment of the apparatus of my invention partly incross-section. K

' Referring to the drawing, I have denoted therein'a well bore by reference numeral ll Well bore i0 extends downwardly from the surface :of the ground 12, which is formed at the lower end oi the well bore. Contained withinthe well bore is a casing it, having a closure i4, which-is adapted to string of oil well tubing l concentricalcasing. A cap' I] is provided on of tubing II which communicates i1 through a conduit l4. pressure indicator It, a temperature indicator indicator 2i are preferably protime the bag is in a deflated position.

needed, and thereby avoid the size of it the'pressure will rise II to a well cavity or bottom hole threadedly connected to vided on conduit and closure" l4.

connected to the vided with an annular groove face. A bag 24, which is preferably composed of an elastic, resilient, inflatable, distortable, oilresistant material, such as synthetic rubber, covera the lower-fend of the string of tubing and extends upwardly around ring 22 and over groove 21. Positioned above the portion of the bag cove ering groove-22 is a sleeve 25, the upper end of which abuts a protector member 26 which is the lower end of the tubing in a manner'whereby sleeve 25 causes the bag to. make .sealing contact with groove 23. Protector 24 extends downwardly beyond the lower end of the tubing, protecting the bag while it is beinglowered through the casing, at which A ring 22, which is. threadedly Referring to the drawing, let us'assume that my instant invention is assembled and positioned in the bore hole, as shown. therein. A gas is compressed by compressor I1 and conveyed through conduit 18 and tubing I! to the interior of bag 24 where the gas distends its outline conforms with the walls .of cavity 12. The volume of gas within the bag will then substantially equal thevolume of the cavity. It will be noted that bybbserving injected gas on pressure indicator l8 that the pressure of gas will rise comparatively slowly until the bag is fully expanded, at

sharply.v By knowing the volume, pressure, and temperature, of the gas at the surfaceof the ground, as indicated on the pressure, temperature, and volume indicators, the

volume of gas in bag 24 can be determined and hence the .volume of cavity l2 can likewise be determined. In determining thevolume of bag 24 corrections for temperature and pressure in well cavity l2 must be considered. By knowinB the pressure and temperature of the gas in bag Y24 and the volume or gas be readily comprehendedby persons 7 the art. vIt is to be clearly understood, however, that various changes in the apparatus herewith shown and described and in the method of practicing 'the'invention, outlined above, sorted to without departing from the spirit or II intermediate the compressor lower end of the tubing, is pro- 23 on its upperthe bag until the pressure of the which time passing through volit is believed that the apinstant-invention will skilled in may be re' cavity, the lowermost end of saidconduit including' a downwardly flanged protective member, 'a flexible inflatable member disposed in fluid tight reiationwith the lower portion of the conduit and communicating therewith, said inflatable member being retractable beneath the protective member when deflated and mean for transmitting a measured quantity of fluid under pressure throughthe conduit and into the member to inflate the same until it substantially conforms with the configuration of the surface of the cavit).

2. In apparatus for determining the volume of the bottom hole portion of a wellbcre, the

combination comprising a string of tubing in the well bore and extending to the lower por tion thereof, an inflatable container disposed below the lower end of the tubing, means for hermetically securing the container to the lower end of the tubing, said means including a grooved ring threaded to the end of the tubing, a sleeve urging the mouth of the container into said groove. and a downwardly flanged protective member threaded to the tubing and bearing against said sleeve, the inflatable member being retractable beneath the protective member when deflated and means for transmittinga measured quantity of gas downwardly through the tubing and into the container under s ufllcient pressure to inflate the container until it contacts substantiaily the entire surface of the bottom hole.

RICHARD L. HUNTINGTON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2606442 *Jul 31, 1947Aug 12, 1952Rainhart CompanyFlexible and extensible membrane
US2662400 *Feb 9, 1949Dec 15, 1953Paul Berman BenjaminMethod and apparatus for determining the volume of articles
US2667782 *Feb 28, 1951Feb 2, 1954Shea John EApparatus for measuring volumes of solid materials
US2696113 *Jul 16, 1952Dec 7, 1954Standard Oil Dev CoMethod of determining the volume of liquid transferred from a source to a receptacle through an interconnected conduit
US2738675 *Aug 20, 1954Mar 20, 1956Blair Charles GGauge for liquid storage tanks
US2848052 *Nov 19, 1954Aug 19, 1958Phillips Petroleum CoProcess for vertical fracturing
US2877647 *May 26, 1955Mar 17, 1959Iowa State College Res FoundatSoil testing apparatus
US2924096 *Mar 9, 1955Feb 9, 1960William Humphres HerbertCavity volume measuring instruments
US2957341 *Jan 16, 1956Oct 25, 1960Auguste Menard Louis FrancoisSoil testing apparatus
US2967427 *Mar 8, 1957Jan 10, 1961Goodrich Co B FMeasuring brake motor displacement
US3059469 *Jun 12, 1961Oct 23, 1962Jersey Prod Res CoDetermination of cavity size in earth formations penetrated by a borehole
US3369395 *Nov 3, 1964Feb 20, 1968Cities Service Oil CoFormation pressure tester
US3377839 *Jan 4, 1966Apr 16, 1968Strabag Bau AgApparatus for the determination of bulk densities
US5205358 *Jul 16, 1991Apr 27, 1993Mitzlaff Darald DPipe plugging system
US7225875 *Feb 6, 2004Jun 5, 2007Halliburton Energy Services, Inc.Multi-layered wellbore junction
US7320366Feb 15, 2005Jan 22, 2008Halliburton Energy Services, Inc.Assembly of downhole equipment in a wellbore
WO2000003210A1 *Jul 8, 1999Jan 20, 2000Sugen IncDevice for estimating volume
Classifications
U.S. Classification73/149, 166/195, 166/187, 73/40.50R, 73/152.54
International ClassificationE02D1/02, E02D1/00, G01F17/00, E21B47/00
Cooperative ClassificationE02D1/02, G01F17/00, E21B47/0003
European ClassificationE02D1/02, E21B47/00D, G01F17/00