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    • 32. 发明授权
    • Sand screen for production oil wells
    • 砂筛生产油井
    • US4754807A
    • 1988-07-05
    • US023219
    • 1987-03-09
    • Udo Lange
    • Udo Lange
    • B01D29/15E21B43/08
    • E21B43/088B01D29/15
    • In oil and gas production installations, formation sand may pass through sand screens and enter the tubing, causing damage and increasing abrasive wear. Gravel used to prevent this often leaves gaps and lets formation sand pass through. The invention eliminates such gaps by incorporating an ordinary polished bore (11) in the sand screen (4, 7) to land and seal off the wash pipe (9). Two concentric tubes (4a, 4b) are connected to each other by a collar (17) whose inside surface is a polished bore (11) and whose outer side has supports (17a, 17b) for the tubes (4a, 4b) and the upset screens.
    • 在石油和天然气生产设备中,地层砂可能通过砂筛并进入管道,造成损坏并增加磨损。 用于防止这种砂石经常留下间隙并使地层砂通过。 本发明通过将普通的抛光孔(11)结合在筛网(4,7)中来抵消和密封洗涤管(9)而消除了这种间隙。 两个同心管(4a,4b)通过其内表面是抛光孔(11)并且其外侧具有用于管(4a,4b)的支撑件(17a,17b)的套环(17)彼此连接,并且 沮丧的屏幕。
    • 38. 发明申请
    • AZETIDIN COMPOUNDS SUITABLE FOR TREATING DISORDERS THAT RESPOND TO MODULATION OF THE SEROTONIN 5-HT6 RECEPTOR
    • 适用于治疗响应调节SEROTONIN 5-HT6受体的疾病的AZETIDIN化合物
    • US20100137280A1
    • 2010-06-03
    • US12532406
    • 2008-03-20
    • Thomas Schultz, SR.Wilfried BrajeSean Colm TurnerAndreas HauptUdo LangeKarla DrescherKarsten WickeLiliane UngerMario MezlerMatthias Mayrer
    • Thomas Schultz, SR.Wilfried BrajeSean Colm TurnerAndreas HauptUdo LangeKarla DrescherKarsten WickeLiliane UngerMario MezlerMatthias Mayrer
    • A61K31/404A61K31/437A61K31/4184A61K31/416C07D403/10C07D413/02C07D401/14C07D471/04C07D487/04A61K31/506A61P25/00A61P3/04A61P25/30A61P25/18
    • C07D471/04C07D403/04
    • The present invention relates to compounds of formula (I) wherein A is C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-hydroxyalkyl, C2-C6-alkenyl, C2-C6-halo-alkenyl, C3-C6-cycloalkyl, aryl-C1-C4-alkyl, aryl-C2-C4-alkenyl, aryl or hetaryl, is a single or double bond; X1 and X2 are N, CRx1, NRx2, or CRx3Rx4; Rx1, Rx3 and Rx4 are H, halogen, CN, NO2, C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylcarbonyl, etc. or two geminal radicals Rx3 and Rx4 together with the carbon atom to which they are bound may form a carbonyl group or a 3- to 6-membered carbocyclic or heterocyclic spiro-annulated ring; Rx2 is hydrogen, C1-C6-alkyl, C1-C6-alkylcarbonyl, C1-C6-haloalkyl, etc.; or two vicinal radicals Rx1, Rx2, Rx3 or Rx4 together with X1 and X2 form a five- or six-membered carbocyclic or heterocyclic fused ring; Y1, Y2 and Y3 are N or CRy; Ry is H, halogen, CN, NO2, C1-C6-alkyl, C1-C6-alkoxy, C1-C6-alkylcarbonyl, C1-C6-haloalkyl, etc.; wherein a maximum of 3 of the radicals X1, X2, Y1, Y2 and Y3 are selected from NRx1 and N; R1 is hydrogen, C1-C6-alkyl, C1-C6-hydroxyalkyl, C1-C6-haloalkyl, etc.; R2 is C1-C4-alkyl or C1-C4-haloalkyl; n is 0, 1 or 2; physiologically tolerated acid addition salts and the N-oxides thereof, pharmaceutical composition comprising them, a method for treating medical disorders selected from diseases of the central nervous system, addiction diseases or obesity, said method comprising administering an effective amount of such compounds to a subject in need and the use of such a compound for preparing a pharmaceutical compositions.
    • 本发明涉及式(I)化合物,其中A为C 1 -C 6 - 烷基,C 1 -C 6 - 卤代烷基,C 1 -C 6羟基烷基,C 2 -C 6 - 烯基,C 2 -C 6 - 卤代烯基,C 3 -C 6 - 环烷基,芳基-C 1 -C 4烷基,芳基-C 2 -C 4 - 烯基,芳基或杂芳基,是单键或双键; X1和X2是N,CRx1,NRx2或CRx3Rx4; Rx1,Rx3和Rx4是H,卤素,CN,NO2,C1-C6-烷基,C1-C6-烷氧基,C1-C6-烷基羰基等,或两个偕根基Rx3和Rx4与它们所在的碳原子一起 结合可形成羰基或3-至6-元碳环或杂环螺环状环; Rx2是氢,C1-C6-烷基,C1-C6-烷基羰基,C1-C6-卤代烷基等; 或两个连位基Rx1,Rx2,Rx3或Rx4与X1和X2一起形成五元或六元碳环或杂环稠环; Y1,Y2和Y3为N或CRy; Ry是H,卤素,CN,NO 2,C 1 -C 6 - 烷基,C 1 -C 6 - 烷氧基,C 1 -C 6 - 烷基羰基,C 1 -C 6 - 卤代烷基等; 其中基团X1,X2,Y1,Y2和Y3中的最多3个选自NRx1和N; R1是氢,C1-C6-烷基,C1-C6-羟基烷基,C1-C6-卤代烷基等; R2是C1-C4-烷基或C1-C4卤代烷基; n为0,1或2; 生理耐受的酸加成盐及其N-氧化物,包含它们的药物组合物,治疗选自中枢神经系统疾病,成瘾疾病或肥胖症的医学病症的方法,所述方法包括向受试者施用有效量的这些化合物 并且使用这种化合物来制备药物组合物。