公开(公告)号：KR790000823B1

公开(公告)日：1979-07-18

申请号：KR730000958

申请日：1973-06-06

Applicant: TEXACO DEVELOPMENT CORP

Inventor： PITTS R W JR

Abstract: A device for oil well prospecting using neutron-gamma rays for investigating characteristics of underground rocks bored and checking the earth stratum and the electrical signal pulse between the start and finish of each neutron pulse consisted of a 1st gating device for transmitting to the calculator input terminal of the inform. signal pulse, 2nd gating device transmitting to calculator input terminal and operating during the neutron pulse. Back-ground γrays of logging stratum checked by nonelastic γrays.

公开(公告)号：KR790000824B1

公开(公告)日：1979-07-18

申请号：KR740004279

申请日：1974-12-16

Applicant: TEXACO DEVELOPMENT CORP

Inventor： PAAP H J ,  PITTS R W JR

Abstract: A device for surveying drilling in the earth's formation moved the prospecting device (12) and continuously oscillated the HEN in the prospecting device so that collision with the circumf. medium resulted in expans of the TN of the circumf. medium harmonize and modulated the strength of the HEN. and continuously checked the response of the TN. from the circumf, medium. Recording method for the stratum variable of the borehol (10) used a step phase electric signal with responding function of the TN. from the circumf. medium.

公开(公告)号：DK386375A

公开(公告)日：1976-02-29

申请号：DK386375

申请日：1975-08-27

Applicant: TEXACO DEVELOPMENT CORP

Inventor： PITTS R W JR ,  WHATLEY H A JR

IPC: G01V5/04 ,  E21B47/12 ,  G01V

Abstract: A conventional type radiation detector in cooperation with a photomultiplier tube provides data pulses of one polarity, corresponding in peak amplitude and number to detected radiation in a borehole traversing an earth formation. Each data pulse is effectively converted to two pulses of different polarities, with one pulse starting when the other is completed and transmitted over a common well logging cable. The creation of a second pulse of an opposite polarity cancels out the low frequency component of the pulse so that they arrive at the surface as a pulse of a single polarity having a very short tail and a fast rise time. This permits more pulses to be transmitted within a given time period than heretofore existed. Surface electronics process the transmitted pulses to provide a record of the sensed condition in the borehole.

公开(公告)号：DK374474A

公开(公告)日：1975-02-24

申请号：DK374474

申请日：1974-07-11

Applicant: TEXACO DEVELOPMENT CORP

Inventor： PITTS R W JR ,  WHATLEY H A JR

IPC: G01V1/28 ,  E21B49/00 ,  G01N9/36 ,  G01V5/04 ,  E21B