Show metadata Hide metadata

(19)

(11)

2 029 056

(13)

(51)

IPC

(21) (22)

Application

4940677/03, 1991-05-31

(22)

Actual filing date

1991-05-31

(45)

Published

1995-02-20

(72)

Inventor

Ehdel'Man Ja.A.Nikitin S.V.Ravilov F.F.Nikolaev V.F.Makushin V.V.Martyshin A.N.Sianka-Ibarra L.Gavrilov Ja.S.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Burovoj Tekhniki

TOGGLE-TYPE CORE CATCHER Russian patent published in 1995 - IPC

Abstract RU 2029056 C1

FIELD: well drilling. SUBSTANCE: long toggles are located above short toggles. Distance L between centers of their turning equals at least the value including difference of radius R of circumference formed by toggle ends at their maximum opening and difference of lengths D and K of long and short toggles:L=R-(D-K). EFFECT: higher efficiency. 4 dwg

Similar patents RU2029056C1

Title	Year	Author	Number
ASSEMBLY OF CORE CATCHERS	1991	Messer A.G. Martyshin A.N. Makushin V.V. Nikolaev V.F. Ravilov F.F. Sianka-Ibarra L. Solov'Eva N.A. Surkov D.V. Ehdel'Man Ja.A.	RU2029060C1
MULTISTAGE TOGGLE-TYPE CORE CATCHER	1991	Ehdel'Man Ja.A. Nikitin S.V. Ravilov F.F. Rajkhert L.A. Nikolaev V.F. Makushin V.V. Messer A.G. Sianka-Ibarra L. Surkov D.V. Solov'Eva N.A.	RU2029061C1
ASSEMBLY OF CORE CATCHERS	1991	Vasil'Eva L.Z. Lobkareva G.N. Nikolaev V.F. Makushin V.V. Sianka-Ibarra L. Surkov D.V. Ehdel'Man Ja.A.	RU2029059C1
TOGGLE-TYPE CORE CATCHER	0	Edelman Yakov Aleksandrovich Nikitin Stanislav Vasilevich Nikolaev Vladimir Filippovich Makushin Vyacheslav Vladimirovich Martyshin Adolf Nikolaevich Messer Aleksej Georgievich Ravilov Farid Fedorovich Sianka-Ibarra Luis Gavrilov Yaroslav Sergeevich	SU1788202A1
CORE GRIPPER ARRANGEMENT	0	Edelman Yakov Aleksandrovich Surkov Dmitrij Valerevich Nikolaev Vladimir Filippovich Makushin Vyacheslav Vladimirovich Messer Aleksej Georgievich Ravilov Farid Fedorovich Kuntsyak Yaroslav Vasilevich	SU1809235A1
CORE CATCHER	1991	Nikolaev V.F. Ehdel'Man Ja.A. Messer A.G. Pavlov N.G. Makushin V.V. Surkov D.V.	RU2029057C1
CORE CATCHER	1991	Ehdel'Man Ja.A. Surkov D.V.	RU2029058C1
CORE CATCHER	0	Edelman Yakov Aleksandrovich	SU1808988A1
CORE BARREL	0	Ravilov Farid Fedorovich Edelman Yakov Aleksandrovich Messer Aleksej Georgievich Makushin Vyacheslav Vladimirovich Nikitin Stanislav Vasilevich Sianka-Ibarra Luis Filippov Vladimir Nikolaevich	SU1799992A1
LEVER-TYPE CORE GRIPPER	0	Nikolaev Vladimir Filippovich Edelman Yakov Aleksandrovich Messer Aleksej Georgievich Pavlov Nikolaj Georgievich	SU1737099A1

RU 2 029 056 C1

Authors

Ehdel'Man Ja.A.

Nikitin S.V.

Ravilov F.F.

Nikolaev V.F.

Makushin V.V.

Martyshin A.N.

Sianka-Ibarra L.

Gavrilov Ja.S.

Dates

1995-02-20—Published

1991-05-31—Filed